Pesticide Applicator Certification Practice - C3
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Hello! Do you have any knowledge about pesticides? If yes, then check out our well-researched 'TN Pesticide Practice Test Quiz' that is designed to check your understanding of the same. Pests are well-known for destroying crops, and therefore, it is important to control them using pesticide-based medicines and applicators. So, let's start the quiz and see how much knowledge you have. You just need to pick the correct option for every question. Your final scores will be displayed at the end.
- 1.
Moles feed primarily on:
- A.
Roots & tubers
- B.
Insects & earthworms
- C.
Fungi & decaying matter
- D.
Soil
Correct Answer
B. Insects & earthwormsExplanation
Moles feed primarily on insects and earthworms because they are insectivores and their diet consists mainly of small invertebrates found in the soil. Insects and earthworms are a rich source of protein and nutrients for moles, and they use their strong front limbs and sharp claws to dig tunnels and locate their prey. While moles may also consume roots, tubers, fungi, and decaying matter, their main source of food comes from insects and earthworms.Rate this question:
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- 2.
Most turfgrass diseases are caused by:
- A.
Viruses
- B.
Fungi
- C.
Nematodes
- D.
Bacteria
Correct Answer
B. FungiExplanation
Most turfgrass diseases are caused by fungi. Fungi are a common cause of plant diseases, including those affecting turfgrass. Fungal infections can lead to various symptoms such as discoloration, wilting, and the formation of patches or spots on the grass. Fungi thrive in humid and moist conditions, making lawns susceptible to fungal diseases during periods of high moisture. Common turfgrass diseases caused by fungi include dollar spot, brown patch, and powdery mildew. Control measures for fungal diseases typically involve proper lawn maintenance practices, such as regular mowing, adequate watering, and proper fertilization, along with the use of fungicides if necessary.Rate this question:
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- 3.
When does a private applicator become a commercial applicator?
- A.
When he/she exchanges services for another private applicator
- B.
When he/she sprays for another individual and charges a fee
- C.
When he/she sprays within a greenhouse
- D.
When their income exceeds $25,000
Correct Answer
B. When he/she sprays for another individual and charges a feeExplanation
A private applicator becomes a commercial applicator when he/she sprays for another individual and charges a fee. This indicates that the private applicator is no longer providing services solely for themselves, but is now engaging in a business transaction by accepting payment for their services. This distinction is important because commercial applicators are subject to different regulations and licensing requirements compared to private applicators.Rate this question:
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- 4.
Perhaps the most important factor to consider when trapping moles is:
- A.
Correct placement of the trap
- B.
The time of year when trapping is attempted
- C.
The time of day when the trap is set
- D.
Using the correct bait
Correct Answer
A. Correct placement of the trapExplanation
The correct answer is the correct placement of the trap. Trapping moles requires careful consideration of where to place the trap in order to maximize its effectiveness. Moles create intricate tunnel systems underground, and placing the trap in an active tunnel or near mole activity is crucial. By placing the trap in the right location, the chances of successfully trapping the mole are significantly increased.Rate this question:
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- 5.
To reduce the chance of invasion by carpenter ants, one should:
- A.
Keep wood mulch at least 1 foot away from the base of a structure
- B.
Keep wood mulch moist
- C.
Bank mulch around the base of plants
- D.
Use pine bark mulch
Correct Answer
A. Keep wood mulch at least 1 foot away from the base of a structureExplanation
Keeping wood mulch at least 1 foot away from the base of a structure reduces the chance of invasion by carpenter ants. This is because carpenter ants are attracted to wood and by keeping the mulch away from the structure, it creates a barrier that makes it more difficult for the ants to access the building. This helps to prevent them from nesting in the structure and causing potential damage.Rate this question:
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- 6.
The classic symptoms of this disease in closely mowed turf is a "smoke ring" of grayish mycelium on the edge of brown, dead patches of grass
- A.
Brown patch
- B.
Fairy rings
- C.
Dollar spot
- D.
Powdery mildew
Correct Answer
A. Brown patchExplanation
The classic symptoms of brown patch disease in closely mowed turf include the presence of a "smoke ring" of grayish mycelium on the edge of brown, dead patches of grass. This indicates that the disease is affecting the turf and causing the grass to die in certain areas. Fairy rings, dollar spot, and powdery mildew do not typically exhibit this specific symptom, making brown patch the correct answer.Rate this question:
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- 7.
Air blast sprayers should never be used:
- A.
To apply insecticides to trees
- B.
To treat for a turf pest
- C.
To apply a herbicide
- D.
When mixing pesticides
Correct Answer
C. To apply a herbicideExplanation
Air blast sprayers should never be used to apply a herbicide because these sprayers are designed to deliver a high volume of liquid droplets, which may result in excessive drift and potential damage to non-target plants. Herbicides are typically applied in a targeted manner, and using an air blast sprayer may lead to unintended contamination and harm to surrounding vegetation. It is important to use the appropriate equipment for each type of pesticide application to ensure effective and safe results.Rate this question:
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- 8.
Which of the following pest groups does not have sucking mouthparts?
- A.
Whiteflies
- B.
Thrips
- C.
Aphids
- D.
Sawflies
Correct Answer
D. SawfliesExplanation
Sawflies do not have sucking mouthparts. Sucking mouthparts are specialized structures that allow insects to extract fluids from plants or other organisms. Whiteflies, thrips, and aphids are all known for their sucking mouthparts, which they use to feed on plant sap. However, sawflies have chewing mouthparts instead, which they use to consume plant material by biting and chewing.Rate this question:
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- 9.
To reduce drift and vaporization, which of the following should NOT be done:
- A.
Use a lower spray pressure
- B.
Apply when wind speeds are low
- C.
Reduce spray nozzle opening size
- D.
Keep spray nozzle as close to target as possible
Correct Answer
C. Reduce spray nozzle opening sizeExplanation
Reducing the spray nozzle opening size should not be done to reduce drift and vaporization. This is because reducing the opening size will increase the spray pressure, leading to finer droplets that are more prone to drift and vaporization. Therefore, it is important to keep the spray nozzle opening size appropriate for the desired application to minimize drift and vaporization.Rate this question:
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- 10.
Powdery mildew growth is enhanced by:
- A.
High temperatures and high relative humidity
- B.
Proper fertilization & wet foliage
- C.
Insect feeding
- D.
Cool nighttime temperatures, high relative humidity and lush plant growth
Correct Answer
D. Cool nighttime temperatures, high relative humidity and lush plant growthExplanation
Powdery mildew is a fungal disease that thrives in cool nighttime temperatures, high relative humidity, and lush plant growth. These conditions create an ideal environment for the growth and spread of the powdery mildew fungus. High relative humidity allows the spores to germinate and infect the plant, while cool nighttime temperatures slow down the growth of the plant and make it more susceptible to the disease. Lush plant growth provides ample surface area for the fungus to colonize and spread. Therefore, cool nighttime temperatures, high relative humidity, and lush plant growth enhance the growth and severity of powdery mildew.Rate this question:
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- 11.
This broadleaf perennial has heart-shaped leaves and purple flowers:
- A.
Purple clover
- B.
Henbit
- C.
Curly dock
- D.
Wild violet
Correct Answer
D. Wild violetExplanation
Wild violet is the correct answer because it is a broadleaf perennial with heart-shaped leaves and purple flowers. This plant is known for its distinctive heart-shaped leaves and vibrant purple flowers, making it easily recognizable. The other options, purple clover, henbit, and curly dock, do not have heart-shaped leaves or purple flowers, therefore they are not the correct answer.Rate this question:
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- 12.
The bark of a shrub is chewed off on the roots and lower trunk and some of the roots are missing. What could cause this damage?
- A.
Mole
- B.
Lizard
- C.
Vole
- D.
Chipmunk
Correct Answer
C. VoleExplanation
Voles are known to cause damage to shrubs by chewing off the bark on the roots and lower trunk. They also have a tendency to eat the roots, which could explain why some of them are missing in this case. Voles are herbivores and their feeding habits can cause significant damage to plants and trees.Rate this question:
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- 13.
This perennial produces a long, thick, fleshy taproot:
- A.
Dandelion
- B.
Dock
- C.
Henbit
- D.
Wild violet
Correct Answer
A. DandelionExplanation
The correct answer is dandelion. Dandelions are known for their long, thick, fleshy taproots. These taproots help the plant to store nutrients and water, making it more resilient and able to survive in various conditions. The taproot also allows the dandelion to anchor itself firmly in the ground, preventing it from being easily uprooted. Additionally, the taproot of the dandelion has been used in traditional medicine for its potential health benefits.Rate this question:
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- 14.
All of the following are effective in controlling voles except:
- A.
A toxicant
- B.
A fumigant
- C.
An anticoagulant
- D.
A baited snap trap
Correct Answer
B. A fumigantExplanation
A fumigant is not effective in controlling voles because it involves the use of gases or fumes to kill pests, which is not suitable for controlling burrowing rodents like voles. Toxicants, anticoagulants, and baited snap traps are all effective methods for controlling voles as they target the rodents directly or lure them into traps. However, fumigants are not designed to reach voles in their underground burrows, making them ineffective in controlling this particular pest.Rate this question:
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- 15.
To reduce the possibility of pesticide movement, one should NOT:
- A.
Take special precautions when using pesticides on a slope
- B.
Maintain a buffer zone (if possible) between the area to be treated and sensitive areas
- C.
Use the least hazardous pesticide as possible
- D.
Use the highest effective rate of application
Correct Answer
D. Use the highest effective rate of applicationExplanation
Using the highest effective rate of application increases the amount of pesticide being applied, which can increase the risk of movement and potential contamination of sensitive areas. It is important to use the least hazardous pesticide and take special precautions when using pesticides on a slope to minimize the possibility of pesticide movement. Maintaining a buffer zone between the area to be treated and sensitive areas also helps to reduce the risk of pesticide movement.Rate this question:
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- 16.
Small, straw-colored patches no greater than 3 inches in diameter indicate which of the following diseases:
- A.
Fusarium patch
- B.
Brown patch
- C.
Spring dead spot
- D.
Dollar spot
Correct Answer
D. Dollar spotExplanation
Small, straw-colored patches no greater than 3 inches in diameter are characteristic of dollar spot disease. This disease is caused by a fungal pathogen called Sclerotinia homoeocarpa. It commonly affects turfgrass, causing small circular patches that have a bleached or straw-like appearance. Unlike other diseases listed, such as fusarium patch, brown patch, and spring dead spot, dollar spot patches are relatively small in size and have a distinct straw-colored appearance.Rate this question:
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- 17.
When applying pesticides, which of the following is not true?
- A.
Observe reentry period only if long periods of exposure are likely
- B.
Remove items such as toys and pet food dishes from the treatment site
- C.
Avoid treatments to plants to be sold soon after treatment
- D.
Keep animals and humans away during application
Correct Answer
A. Observe reentry period only if long periods of exposure are likelyExplanation
The correct answer is "observe reentry period only if long periods of exposure are likely." This means that it is not true that you should only observe the reentry period if there is a high likelihood of long periods of exposure. The reentry period refers to the time that people or animals should stay away from an area that has been treated with pesticides. It is important to observe the reentry period regardless of the expected duration of exposure to ensure the safety of individuals and animals.Rate this question:
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- 18.
Which is the best way to avoid sooty mold growth?
- A.
Control the pests that produce honeydew
- B.
Spray the foliage with a fungicide
- C.
Remove and burn affected foliage
- D.
Encourage air circulation around plants
Correct Answer
A. Control the pests that produce honeydewExplanation
Controlling the pests that produce honeydew is the best way to avoid sooty mold growth. Sooty mold is a black fungal growth that thrives on the honeydew secreted by insects such as aphids, scale insects, and whiteflies. By eliminating or reducing the population of these pests, there will be less honeydew available for the sooty mold to grow on. This can be achieved through various methods such as insecticides, natural predators, or cultural practices that discourage pest infestations.Rate this question:
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- 19.
To detect a whitefly infestation, one should:
- A.
Inspect the base of stems
- B.
Look on the underside of leaves
- C.
Take soil samples
- D.
Inspect flower heads with a magnifier
Correct Answer
B. Look on the underside of leavesExplanation
To detect a whitefly infestation, one should look on the underside of leaves. Whiteflies are small, flying insects that typically feed on the undersides of leaves. By inspecting the underside of leaves, one can easily spot the presence of whiteflies, which are usually white or pale yellow in color. This is a common and effective method to detect whitefly infestations and take necessary measures to control them.Rate this question:
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- 20.
Which of the following practices is essential for preventing pesticide contamination of water sources?
- A.
Applying pesticides during windy conditions
- B.
Mixing pesticides near streams or lakes
- C.
Using buffer zones around water bodies
- D.
Storing pesticides in open containers
Correct Answer
C. Using buffer zones around water bodiesExplanation
Using buffer zones around water bodies is crucial for preventing pesticide contamination of water sources. Buffer zones are areas of vegetation or designated no-spray zones that help filter and reduce pesticide runoff into streams, lakes, and other water bodies. Applying pesticides during windy conditions, mixing pesticides near water sources, and storing pesticides in open containers increase the risk of contamination and are practices to be avoided.Rate this question:
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- 21.
Commercial applicators may become recertified by:
- A.
Paying $15.00 annually
- B.
Sending an application to TDA
- C.
Earning a certain number of recertification points during the designated period
- D.
Attend a recertification meeting during the last year of the recertification period
Correct Answer
C. Earning a certain number of recertification points during the designated periodExplanation
Commercial applicators can become recertified by earning a certain number of recertification points during the designated period. This means that they need to participate in approved activities or training programs that contribute to their knowledge and skills in the field. By accumulating the required number of points, they demonstrate their commitment to staying updated and competent in their profession. This ensures that commercial applicators are equipped with the necessary knowledge and expertise to safely and effectively carry out their responsibilities.Rate this question:
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- 22.
Streaked, silver foliage results from feeding by:
- A.
Mites
- B.
Lace bugs
- C.
Fungus gnats
- D.
Thrips
Correct Answer
D. ThripsExplanation
Thrips are small, slender insects that feed on plants by piercing and sucking the sap from the leaves. Their feeding can cause damage to the foliage, resulting in streaked and silver-colored leaves. Therefore, the presence of streaked, silver foliage is a characteristic symptom of thrips feeding.Rate this question:
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- 23.
The disease that develops from the tip of the leaf downward and produces red, fiber-like material protruding from the end of cut leaves is called
- A.
Red rust
- B.
Fairy rings
- C.
Red thread
- D.
Pythium blight
Correct Answer
C. Red threadExplanation
Red thread is a disease that affects turfgrass and some ornamental plants. It is characterized by the development of red, fiber-like material protruding from the end of cut leaves. This disease starts at the tip of the leaf and progresses downward, causing the affected areas to turn brown. Red thread is caused by the fungus Laetisaria fuciformis and is commonly found in cool, humid climates. It can be managed through proper lawn maintenance practices such as regular mowing, proper watering, and fertilization.Rate this question:
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- 24.
Which of the following does not prevent or reduce the severity of fairy rings?
- A.
Aerating the soil
- B.
Removing thatch
- C.
Maintaining proper soil moisture
- D.
Extra fertilization
Correct Answer
D. Extra fertilizationExplanation
Extra fertilization does not prevent or reduce the severity of fairy rings. Fairy rings are caused by a fungus in the soil, and excessive fertilization can actually promote the growth of the fungus. Therefore, adding more fertilizer will not help in controlling or minimizing the fairy rings.Rate this question:
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- 25.
A distinguishing feature of beetles is:
- A.
They have leathery front wings that meet in a straight line
- B.
They have 6 legs
- C.
They have chewing mouthparts
- D.
The larvae are the most destructive life stage
Correct Answer
A. They have leathery front wings that meet in a straight lineExplanation
Beetles are known for their distinguishing feature of having leathery front wings that meet in a straight line. This characteristic sets them apart from other insects, as most insects have front wings that are either membranous or partially hardened. The leathery wings of beetles provide them with protection and durability, allowing them to fly efficiently and navigate through various environments. This unique wing structure is one of the key identifying traits of beetles and contributes to their success as a diverse and widespread group of insects.Rate this question:
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- 26.
To avoid root rot, the following is not recommended:
- A.
Install healthy plants
- B.
Locate plants in a well-drained area
- C.
Apply a fungicide drench to the base of the affected plant
- D.
Remove diseased plants
Correct Answer
C. Apply a fungicide drench to the base of the affected plantExplanation
Applying a fungicide drench to the base of the affected plant is not recommended to avoid root rot. This is because root rot is caused by excessive moisture in the soil, and applying a fungicide drench may further increase the moisture levels, exacerbating the problem. Instead, it is advised to install healthy plants, locate them in a well-drained area, and remove diseased plants to prevent the spread of root rot.Rate this question:
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- 27.
This perennial grass produces seed stalks of up to several feet of height:
- A.
Yellow nutsedge
- B.
Common bermudagrass
- C.
Dallisgrass
- D.
Crabgrass
Correct Answer
C. DallisgrassExplanation
Dallisgrass is a perennial grass that can grow seed stalks several feet in height. This means that it produces tall flowering stems that contain seeds. The other options listed, yellow nutsedge, common bermudagrass, and crabgrass, do not typically grow seed stalks of this height. Therefore, dallisgrass is the correct answer.Rate this question:
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- 28.
Which of the following is not true about sod webworm damage and/or control?
- A.
The first sign of damage is baseball-sized, brown patches of turf
- B.
Damage occurs from May to September
- C.
Damaged turf appears ragged
- D.
Silk tubes are produced in the thatch of damaged areas
Correct Answer
C. Damaged turf appears raggedExplanation
Sod webworm damage does not cause the turf to appear ragged. Instead, sod webworm damage typically results in irregular patches of brown turf. The damaged areas may have silk tubes produced in the thatch, and the first sign of damage is usually the presence of baseball-sized, brown patches of turf. Damage from sod webworms usually occurs between May and September.Rate this question:
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- 29.
Commercial applicators who violate FIFRA may be fined:
- A.
Civil penalty of $5,000 for each offense; Criminal penalty of $25,000 or one year in prison
- B.
Civil penalty of $1,000 for each offense; Criminal penalty of $5,000 or one year in prison
- C.
Civil penalty of $5,000 for each offense; Criminal penalty of $100,000.
- D.
None of the above
Correct Answer
A. Civil penalty of $5,000 for each offense; Criminal penalty of $25,000 or one year in prisonExplanation
Commercial applicators who violate FIFRA may be fined a civil penalty of $5,000 for each offense and may face a criminal penalty of $25,000 or one year in prison. This means that if a commercial applicator is found to be in violation of FIFRA, they can be subjected to both civil and criminal penalties. The civil penalty of $5,000 is imposed for each offense, while the criminal penalty can be either $25,000 or one year in prison. This serves as a deterrent and punishment for violating FIFRA regulations, ensuring compliance with the law.Rate this question:
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- 30.
Which of the following is not true about stripe smut?
- A.
It's most noticeable in spring and fall
- B.
It spreads rapidly during periods of high temperature
- C.
Leaves split lengthwise to reveal black spore masses
- D.
Proper fertilization and infrequent, deep watering help infected plants
Correct Answer
B. It spreads rapidly during periods of high temperatureExplanation
Stripe smut is a fungal disease that affects plants. The given statement that is not true about stripe smut is that it spreads rapidly during periods of high temperature. This means that high temperature does not contribute to the rapid spread of stripe smut. The other statements are true about stripe smut: it is most noticeable in spring and fall, leaves split lengthwise to reveal black spore masses, and proper fertilization and infrequent, deep watering help infected plants.Rate this question:
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- 31.
An adult dogwood borer may be mistaken for a:
- A.
Small wasp
- B.
Small moth
- C.
Weevil
- D.
Caterpillar
Correct Answer
A. Small waspExplanation
The adult dogwood borer may be mistaken for a small wasp because of its similar appearance. Both have slender bodies and narrow waists. Additionally, the dogwood borer has clear wings with dark veins, which further adds to the resemblance to a wasp. This similarity in appearance can lead to confusion between the two species.Rate this question:
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- 32.
Stem rots are more prevalent on:
- A.
Fruit trees
- B.
Herbaceous ornamentals
- C.
Plants under drought stress
- D.
Pine trees
Correct Answer
B. Herbaceous ornamentalsExplanation
Stem rots are more prevalent on herbaceous ornamentals because these plants have softer stems compared to fruit trees and pine trees. The softer stems are more susceptible to fungal and bacterial infections that cause stem rot. Additionally, herbaceous ornamentals are often grown in moist and humid conditions, which create favorable environments for the development of these diseases. In contrast, fruit trees and pine trees have tougher and more resistant stems, making them less prone to stem rot. Drought stress in plants can weaken their defense mechanisms, making them more susceptible to diseases, but it is not specifically mentioned that stem rot is more prevalent in plants under drought stress.Rate this question:
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- 33.
Serpentine or blotchy streaks or blisters on the underside of leaves indicates a _ infestation
- A.
Sawfly
- B.
Adelgid
- C.
Crawler
- D.
Leafminer
Correct Answer
D. LeafminerExplanation
Serpentine or blotchy streaks or blisters on the underside of leaves are characteristic symptoms of a leafminer infestation. Leafminers are insects that lay their eggs on plant leaves, and the larvae that hatch tunnel into the leaf tissue, creating distinctive patterns. These tunnels appear as serpentine or blotchy streaks on the leaf surface. Therefore, the presence of such streaks or blisters indicates a leafminer infestation.Rate this question:
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- 34.
Which of the following is not characteristic of yellow nutsedge?
- A.
It superficially resembles a grass
- B.
It has solid, triangular stems
- C.
It has underground tubers which produce new plants
- D.
It produces yellow flowers
Correct Answer
D. It produces yellow flowersExplanation
Yellow nutsedge is a type of weed that is commonly mistaken for a grass due to its similar appearance. It has solid, triangular stems and underground tubers that allow it to reproduce and spread rapidly. However, one characteristic that is not associated with yellow nutsedge is the production of yellow flowers. This is what sets it apart from other plants and helps in its identification.Rate this question:
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- 35.
A small, discolored, water-soaked spot on a limb usually indicates:
- A.
The beginning of a canker
- B.
The tree is over-watered
- C.
A black knot is forming
- D.
The plant has a vascular wilt infection
Correct Answer
A. The beginning of a cankerExplanation
A small, discolored, water-soaked spot on a limb usually indicates the beginning of a canker. Cankers are localized areas of dead tissue on a plant, often caused by fungal or bacterial infections. These infections can enter the plant through wounds or natural openings and cause the tissue to become discolored and water-soaked. As the infection progresses, the canker can expand and cause further damage to the plant, potentially leading to branch dieback or even death of the entire plant if left untreated. Therefore, it is important to identify and treat cankers early to prevent further spread and damage.Rate this question:
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- 36.
Which of the following is not a good pest management technique for greenhouse pests?
- A.
Monitoring with sticky traps
- B.
Exclusion with screens
- C.
Sanitation
- D.
Using time-released fertilizer
Correct Answer
D. Using time-released fertilizerExplanation
Using time-released fertilizer is not a good pest management technique for greenhouse pests because it does not directly target or control pests. Time-released fertilizers are designed to slowly release nutrients to plants over a period of time, promoting healthy growth. While this may benefit plants, it does not have any impact on controlling or managing pests. Therefore, it is not an effective technique for pest management in greenhouses.Rate this question:
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- 37.
When should a preemergent herbicide applied?
- A.
Just after a rain
- B.
A week or two before the target weed emerges
- C.
After weeds have emerged, but before they flower
- D.
When the target weed is first seen
Correct Answer
B. A week or two before the target weed emergesExplanation
A preemergent herbicide should be applied a week or two before the target weed emerges. This timing allows the herbicide to form a barrier in the soil that prevents the weed seeds from germinating and emerging. Applying the herbicide just after a rain may wash it away before it can be effective. Applying it after weeds have emerged or when the target weed is first seen is too late, as the herbicide needs to be applied before the weed seeds have a chance to sprout.Rate this question:
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- 38.
The two most important groups of pests damaging turf in Tennessee are:
- A.
White grubs & cutworms
- B.
Sod webworms & white grubs
- C.
Armyworms & sod webworms
- D.
Billbugs & mole crickets
Correct Answer
A. White grubs & cutwormsExplanation
White grubs and cutworms are the two most important groups of pests damaging turf in Tennessee. These pests can cause significant damage to the grass by feeding on the roots and stems, leading to yellowing, thinning, and even death of the turf. White grubs are the larvae of beetles and can be particularly destructive, while cutworms are caterpillars that cut off the seedlings at the soil level. Controlling these pests is crucial for maintaining healthy turf in Tennessee.Rate this question:
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- 39.
Black knots are most often found on:
- A.
Rose stems
- B.
Geraniums and petunias
- C.
The underside of leavse
- D.
Fruit trees
Correct Answer
D. Fruit treesExplanation
Black knots are most often found on fruit trees. This is because black knot is a common fungal disease that affects various species of fruit trees, such as plum, cherry, and apricot. The disease causes the formation of black, rough, and swollen growths or knots on the branches and twigs of the trees. These knots can eventually lead to branch dieback and reduced fruit production. Therefore, fruit trees are the most susceptible to black knot infection compared to other plants like rose stems, geraniums, and petunias.Rate this question:
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- 40.
Parasites and predators of pests are beneficial because they:
- A.
Indicate that pests are present
- B.
May reduce the need for pesticide applications for certain pests
- C.
Improve soil conditions
- D.
Are not affected by pesticide applications
Correct Answer
B. May reduce the need for pesticide applications for certain pestsExplanation
Parasites and predators of pests are beneficial because they can help reduce the need for pesticide applications for certain pests. These natural enemies can control pest populations by feeding on them, thus reducing their numbers. This can be particularly useful for managing pests in a more sustainable and environmentally friendly way, as it reduces the reliance on chemical pesticides. By utilizing these natural enemies, farmers and gardeners can effectively control pests without negatively impacting the environment or other beneficial organisms.Rate this question:
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- 41.
Armyworms and cutworms are similar in that:
- A.
They produce the same type of damage
- B.
They both feed at night
- C.
They have characteristic stripes down their sides
- D.
They are moth larvae
Correct Answer
D. They are moth larvaeExplanation
Armyworms and cutworms are similar in that they are moth larvae. This means that they both go through a similar life cycle, starting as eggs laid by a moth and then hatching into larvae. Despite their different names, armyworms and cutworms are both types of moth larvae and share this common characteristic. This is what makes them similar to each other.Rate this question:
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- 42.
This disease occurs in cold, wet weather usually developing under snow or leaf cover:
- A.
Powdery mildew
- B.
Red thread
- C.
Fusarium patch
- D.
Slime mold
Correct Answer
C. Fusarium patchExplanation
Fusarium patch is a disease that typically occurs in cold, wet weather conditions, often developing under snow or leaf cover. This fungal disease affects turfgrass and causes circular patches of dead or dying grass. The symptoms include yellow or brown patches with a pinkish or purplish coloration at the outer edges. Fusarium patch thrives in cool and moist environments, making it more prevalent during the winter and early spring months. It can be managed through cultural practices such as improving drainage, reducing thatch buildup, and avoiding excessive nitrogen fertilization.Rate this question:
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- 43.
Which of the following pests have sucking mouthparts?
- A.
Leafhoppers
- B.
Billbugs
- C.
Earwig
- D.
Mole cricket
Correct Answer
A. LeafhoppersExplanation
Leafhoppers have sucking mouthparts. They use their specialized mouthparts to pierce plant tissues and feed on the sap. This allows them to extract nutrients from the plants they feed on. Billbugs, earwigs, and mole crickets do not have sucking mouthparts. Billbugs have chewing mouthparts, earwigs have chewing and biting mouthparts, and mole crickets have chewing mouthparts adapted for digging.Rate this question:
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- 44.
Which of the following is usually not a major environmental factor affecting indoor plant health?
- A.
Low light
- B.
Dry relative humidity
- C.
Air pollution
- D.
Fluctuating or too low temperatures
Correct Answer
C. Air pollutionExplanation
Air pollution is usually not a major environmental factor affecting indoor plant health because indoor environments tend to have better air quality compared to outdoor environments. Indoor plants are typically shielded from pollutants such as vehicle emissions, industrial pollutants, and particulate matter, which are more prevalent outdoors. However, low light, dry relative humidity, and fluctuating or too low temperatures can significantly impact indoor plant health as they directly affect their growth, development, and overall well-being.Rate this question:
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- 45.
If a mimosa tree is diagnosed with a severe case of vascular wilt, the best solution is to:
- A.
Treat the tree with an appropriate fungicide
- B.
Irrigate until symptoms disappear
- C.
Remove the tree, including roots
- D.
Prune out the diseased parts
Correct Answer
C. Remove the tree, including rootsExplanation
If a mimosa tree is diagnosed with a severe case of vascular wilt, the best solution is to remove the tree, including roots. Vascular wilt is a serious fungal disease that affects the plant's water-conducting tissues, causing wilting and eventually death. Once the disease has progressed to a severe stage, it is difficult to control and eradicate. Removing the entire tree, including the roots, is necessary to prevent the spread of the disease to other plants in the vicinity. Pruning out the diseased parts or treating with a fungicide may not be effective in controlling the disease at this stage.Rate this question:
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- 46.
The stems of this grass have distinct silver or white centers:
- A.
Goosegrass
- B.
Dallisgrass
- C.
Crabgrass
- D.
Annua bluegrass
Correct Answer
A. GoosegrassExplanation
Goosegrass is the correct answer because it is known for having distinct silver or white centers on its stems. This characteristic sets it apart from the other grasses listed, such as dallisgrass, crabgrass, and annua bluegrass, which do not typically have this feature.Rate this question:
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- 47.
When an interiorscape planting develops a problem, the first thing to do is:
- A.
Replace affected plants with healthy ones
- B.
Apply pesticides
- C.
Fertilize and irrigate the affected plants
- D.
Determine if an environmental and/or management factor is the cause
Correct Answer
D. Determine if an environmental and/or management factor is the causeExplanation
When an interiorscape planting develops a problem, the first thing to do is to determine if an environmental and/or management factor is the cause. This is because the problem could be due to factors such as inadequate lighting, improper watering, or incorrect temperature. By identifying and addressing these factors, the issue can be resolved and the plants can be saved. Replacing affected plants with healthy ones, applying pesticides, or fertilizing and irrigating the affected plants may not solve the underlying problem and could potentially worsen the situation.Rate this question:
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- 48.
Yellowish spots on grass stems are caused by:
- A.
Mites
- B.
The "spittle" from spittle bugs
- C.
Chinch bugs
- D.
Billbug adults
Correct Answer
C. Chinch bugsExplanation
Chinch bugs are the cause of yellowish spots on grass stems. These insects feed on the sap of grass plants, causing damage that appears as yellowish spots. They have piercing mouthparts that they use to extract the sap, leading to discoloration and weakening of the grass. Chinch bugs are commonly found in lawns and can cause significant damage if left untreated.Rate this question:
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- 49.
This disease produces small, purple-to-reddish-brown circular lesions on grass blades that may enlarge and girdle the leaf
- A.
Red thread
- B.
Helminthosporium
- C.
Stripe smut
- D.
Brown blade
Correct Answer
B. HelminthosporiumExplanation
Helminthosporium is the correct answer because it is a disease that produces small, purple-to-reddish-brown circular lesions on grass blades. These lesions can enlarge and girdle the leaf, causing damage to the grass. Red thread, stripe smut, and brown blade are not diseases that produce these specific symptoms.Rate this question:
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- 50.
To control fire ants, one should:
- A.
Treat every two weeks beginning in spring
- B.
Broadcast a bait, then follow with individual mound treatments
- C.
Dethatch infested turf
- D.
Treat individual mounds first, then broadcast a bait
Correct Answer
B. Broadcast a bait, then follow with individual mound treatmentsExplanation
To control fire ants effectively, it is recommended to first broadcast a bait, which will attract the ants and allow them to carry it back to their mound, effectively eliminating the entire colony. Following this, individual mound treatments should be done to target any remaining mounds that were not affected by the bait. This two-step approach ensures that both the main colony and any satellite colonies are effectively treated, leading to better control of fire ants.Rate this question:
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Current Version
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Jul 10, 2024Quiz Edited by
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Dec 03, 2014Quiz Created by
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