EcoSystems And Biomes Exam- 8th Grade Ngss
Earth is a fascinating planet, and this can be because it is the only planet in our solar system that is capable of sustaining life. These living things exist in specific biomes, and each has its characteristics. The quiz below is designed to help you see how much you know about ecosystems and biomes in preparation for the 8th-grade exams.
Questions and Answers
- 1.
In the following food chain, which organism is the secondary consumer?grass ------> rabbit -------> snake ------> hawk
- A.
Grass
- B.
Rabbit
- C.
Snake
- D.
Hawk
Correct Answer
C. SnakeExplanation
The snake is the secondary consumer in this food chain because it feeds on the primary consumer, which is the rabbit. Secondary consumers are organisms that consume other consumers in the food chain. In this case, the snake consumes the rabbit, which consumes the grass.Rate this question:
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- 2.
Which of the following cannot be recycled?
- A.
Nitrogen
- B.
Carbon
- C.
Water
- D.
Energy
Correct Answer
D. EnergyExplanation
Energy cannot be recycled because it is not a physical substance that can be broken down and reprocessed like materials such as nitrogen, carbon, and water. Energy is a property or a capacity to do work, and it can be converted from one form to another, but it cannot be created or destroyed. Therefore, it cannot be recycled in the same way as physical materials.Rate this question:
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- 3.
Sea anemones contain a venom that is used to sting and paralyze their prey. The clownfish contains an enzyme in their scales that makes them immune to the venom. This allows them to freely live in the sea anemone without being harmed. This is an example of what type of relationship?
- A.
Predator-prey
- B.
Mutualism
- C.
Commensalism
- D.
Parasitism
Correct Answer
C. CommensalismExplanation
The relationship between sea anemones and clownfish is an example of commensalism. In this relationship, the clownfish benefits by being protected from predators while living among the sea anemone's tentacles. The sea anemone is not harmed nor does it benefit from the presence of the clownfish. Therefore, it is considered a commensal relationship.Rate this question:
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- 4.
Which of the following is an abiotic factor in an ecosystem?
- A.
Bird
- B.
Tree
- C.
Rock
- D.
Bacteria
Correct Answer
C. RockExplanation
An abiotic factor is a non-living component that influences an ecosystem. In this case, the correct answer is rock because it is an inanimate object and does not possess any biological characteristics. Rocks can affect the ecosystem by providing habitat, acting as a substrate for plants, influencing water flow, and affecting the availability of nutrients.Rate this question:
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- 5.
In the above food chain, the snake is an example of a
- A.
Producer
- B.
Primary consumer
- C.
Secondary consumer
- D.
Tertiary consumer
Correct Answer
D. Tertiary consumerExplanation
The snake is classified as a tertiary consumer because it is at the top of the food chain and feeds on secondary consumers, such as mice or frogs. Tertiary consumers are organisms that obtain energy by consuming other consumers, making them higher up in the food chain.Rate this question:
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- 6.
Mushrooms and other fungi are responsible for breaking down dead organic matter. In the ecosystem, they are called
- A.
Producers
- B.
Consumers
- C.
Decomposers
- D.
Scavengers
Correct Answer
C. DecomposersExplanation
Mushrooms and other fungi play a crucial role in the ecosystem by breaking down dead organic matter. They obtain nutrients by decomposing dead plants and animals, which helps in the recycling of essential nutrients back into the soil. This process of decomposition is vital for the overall health and balance of the ecosystem. Therefore, mushrooms and other fungi are referred to as decomposers.Rate this question:
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- 7.
The amount of energy that is passed from one organism to the next in a food chain is
- A.
5%
- B.
10%
- C.
15%
- D.
20%
Correct Answer
B. 10%Explanation
In a food chain, energy is transferred from one organism to another through the consumption of food. However, this transfer of energy is not efficient, and a significant amount of energy is lost as heat during each transfer. On average, only about 10% of the energy from one trophic level is passed on to the next level. This is due to factors such as metabolism, respiration, and incomplete digestion. Therefore, the correct answer is 10%.Rate this question:
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- 8.
On what trophic level would you find organisms that use the sun's energy directly to make their own food?
- A.
1
- B.
2
- C.
3
- D.
4
Correct Answer
A. 1Explanation
Organisms that use the sun's energy directly to make their own food are known as autotrophs. They are able to convert sunlight into chemical energy through the process of photosynthesis. These autotrophs, such as plants and algae, form the first trophic level in a food chain or food web. They are also known as producers since they produce their own food and serve as a source of energy for other organisms in the ecosystem.Rate this question:
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- 9.
In the terrestrial food web above, what would be the effect of a farmer introducing a rat poison in to the ecosystem that is toxic to rats and mice?
- A.
The population of fox would decrease
- B.
The population of grasshoppers would decrease
- C.
The population of hawks would increase
- D.
The population of rabbits would decrease
Correct Answer
A. The population of fox would decreaseExplanation
If a farmer introduces a rat poison into the ecosystem that is toxic to rats and mice, it would lead to a decrease in the population of rats and mice. Since foxes primarily feed on rats and mice, a decrease in their population would result in a decrease in the population of foxes. Therefore, the correct answer is that the population of foxes would decrease.Rate this question:
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- 10.
An animal that only eats the flesh of another animal is called a
- A.
Producer
- B.
Herbivore
- C.
Carnivore
- D.
Omnivore
Correct Answer
C. CarnivoreExplanation
A carnivore is an animal that only eats the flesh of other animals. This means that it primarily consumes meat and does not eat plants or other sources of food. Examples of carnivores include lions, tigers, and wolves. They have adaptations such as sharp teeth and claws to help them catch and kill their prey. In contrast, a producer refers to an organism that produces its own food through photosynthesis, such as plants. A herbivore eats only plants, while an omnivore consumes both plants and animals. Therefore, the correct answer is carnivore.Rate this question:
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- 11.
Which of the following statements is true about matter and energy?
- A.
Matter is not recycled; energy is recycled
- B.
Matter is recycled; energy is not recycled
- C.
Both matter and energy are recycled
- D.
Neither matter nor energy are recycled
Correct Answer
B. Matter is recycled; energy is not recycledExplanation
Matter is recycled because it can neither be created nor destroyed, but can only change form through physical or chemical processes. Energy, on the other hand, is not recycled because it can be converted from one form to another, but it cannot be created or destroyed. Energy is constantly being transferred and transformed, but it is not recycled in the sense that it does not return to its original form.Rate this question:
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- 12.
The ultimate source of energy for all organisms in life is
- A.
Water
- B.
Oxygen
- C.
Nitrogen
- D.
The sun
Correct Answer
D. The sunExplanation
The sun is the ultimate source of energy for all organisms in life. Through the process of photosynthesis, plants convert sunlight into chemical energy in the form of glucose, which is then consumed by other organisms. This energy is transferred through the food chain, allowing organisms to perform essential life functions and sustain their metabolism. Without the sun's energy, life on Earth would not be possible.Rate this question:
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- 13.
Which of the following is considered the main source of excess carbon dioxide in the atmosphere leading to the destruction of the ozone layer?
- A.
Carbon gas released into the atmosphere from factories and cars
- B.
Carbon dioxide being released from animals during the process of cellular respiration
- C.
Carbon gas released into the soil through the process of decomposition
- D.
Carbon dioxide released into the oceans during deposition and decomposition
Correct Answer
A. Carbon gas released into the atmospHere from factories and carsExplanation
The main source of excess carbon dioxide in the atmosphere leading to the destruction of the ozone layer is carbon gas released into the atmosphere from factories and cars. This is because factories and cars emit large amounts of carbon dioxide as a byproduct of burning fossil fuels. This carbon dioxide then accumulates in the atmosphere, contributing to the greenhouse effect and climate change. The destruction of the ozone layer is caused by other substances such as chlorofluorocarbons (CFCs), not carbon dioxide.Rate this question:
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- 14.
All of the following are ways that we can protect the biosphere except
- A.
Recycling
- B.
Protecting waterways from the dumping of illegal chemicals
- C.
Burning fossil fuels
- D.
Decreasing the process of deforestation
Correct Answer
C. Burning fossil fuelsExplanation
Burning fossil fuels is not a way to protect the biosphere because it releases harmful greenhouse gases into the atmosphere, contributing to climate change and air pollution. On the other hand, recycling helps reduce waste and conserve resources, protecting the environment. Protecting waterways from illegal chemical dumping prevents contamination and maintains the health of aquatic ecosystems. Decreasing deforestation helps preserve biodiversity and maintain the balance of ecosystems.Rate this question:
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- 15.
Which of the following organisms is an autotroph?
- A.
Algae
- B.
A bear
- C.
A cheetah
- D.
A fish
Correct Answer
A. AlgaeExplanation
Algae is an autotroph because it can produce its own food through photosynthesis. Autotrophs are organisms that can convert sunlight, water, and carbon dioxide into energy-rich organic compounds. Algae have chloroplasts that contain chlorophyll, which enables them to capture sunlight and convert it into energy. In contrast, bears, cheetahs, and fish are heterotrophs that rely on consuming other organisms for their energy and nutrients.Rate this question:
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- 16.
What is the most important product in Respiration?
- A.
Carbon dioxide
- B.
Oxygen
- C.
Energy
- D.
Water
Correct Answer
C. EnergyExplanation
Energy is the most important product in respiration because it is the fuel that powers all cellular activities. During respiration, glucose is broken down in the presence of oxygen to produce energy in the form of ATP (adenosine triphosphate). This energy is then used by cells for various processes such as muscle contraction, synthesis of molecules, and active transport. Without energy, cells would not be able to function properly, leading to a breakdown of essential processes and ultimately cell death.Rate this question:
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- 17.
Green plants undergo photosynthesis to make their own food. The followings are required for this process except
- A.
Sunlight
- B.
Oxygen
- C.
Water
- D.
Carbon dioxide
Correct Answer(s)
A. Sunlight
B. OxygenExplanation
Green plants undergo photosynthesis to make their own food by converting carbon dioxide and water into glucose and oxygen. Sunlight is essential for this process as it provides the energy needed for photosynthesis to occur. Oxygen is also produced as a byproduct of photosynthesis. Therefore, the correct answer is "sunlight, oxygen" as both are required for photosynthesis to take place.Rate this question:
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- 18.
How do biotic resources differ from abiotic resources?
- A.
Biotic resources are more important than abiotic resources
- B.
Biotic resources are limited and abiotic are unlimited.
- C.
Biotic resources are living and abiotic resources are nonliving
- D.
Biotic resources are non-living and abiotic resources are living
Correct Answer
C. Biotic resources are living and abiotic resources are nonlivingExplanation
Biotic resources refer to living organisms, such as plants, animals, and microorganisms, that are utilized by humans for various purposes. On the other hand, abiotic resources are nonliving elements like air, water, minerals, and sunlight that are also essential for human survival and development. The given answer correctly states that biotic resources are living, while abiotic resources are nonliving. This distinction is crucial as it helps us understand the different ways in which these resources are utilized, managed, and conserved for sustainable development.Rate this question:
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- 19.
In an energy pyramid, the bottom level represents:
- A.
Producers
- B.
Consumers
- C.
Decomposers
- D.
Scavengers
Correct Answer
A. ProducersExplanation
In an energy pyramid, the bottom level represents producers. Producers are organisms, such as plants, that are capable of converting sunlight into energy through the process of photosynthesis. They are the primary source of energy in an ecosystem as they produce food for themselves and other organisms. The energy produced by producers is then transferred to the higher levels of the pyramid, which represent consumers, decomposers, and scavengers. Therefore, the bottom level of the energy pyramid is occupied by producers.Rate this question:
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- 20.
A species feeding on the tissue of its host, while not killing it directly, is a
- A.
Decomposer
- B.
Predator
- C.
Parasite
- D.
Consumer
Correct Answer
C. ParasiteExplanation
A species that feeds on the tissue of its host without directly killing it is called a parasite. Parasites rely on the host for their survival and often harm or weaken the host in the process. Unlike predators, parasites do not necessarily kill their host, but they still benefit from the resources obtained from the host. Therefore, the correct answer is parasite.Rate this question:
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- 21.
What is Ecology?
- A.
A thing that makes up their surroundings
- B.
Organism that feed directly or indirectly on producers
- C.
Relationships and other interactions with other organisms
- D.
The study of the earth
Correct Answer
C. Relationships and other interactions with other organismsExplanation
Ecology is the study of relationships and interactions between organisms and their environment. It focuses on understanding how organisms interact with each other and their surroundings, including other organisms, the physical environment, and the resources available. This field of study explores the interdependence and interconnectedness of different species, as well as the impact of these relationships on the overall ecosystem. By studying ecology, scientists can gain insights into the balance and functioning of ecosystems and how they can be conserved and managed effectively.Rate this question:
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- 22.
Which of the following levels of organisation is arranged in the correct sequence from most to least inclusive?
- A.
Community, ecosystem, individual, population
- B.
Ecosystem, community, population, individual
- C.
Population, ecosystem, individual, community
- D.
Individual, community, population, ecosystem
Correct Answer
B. Ecosystem, community, population, individualExplanation
The correct sequence from most to least inclusive is ecosystem, community, population, individual. This is because an ecosystem consists of all the living organisms (community) and their physical environment. Within a community, there are multiple populations of different species. And within a population, there are individual organisms. So, the ecosystem includes all the components, while the individual is the smallest unit of organization.Rate this question:
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- 23.
Which if the following is an example of a heterotroph?
- A.
Grass
- B.
Rabbit
- C.
Wheat
- D.
Seaweed
Correct Answer
B. RabbitExplanation
A heterotroph is an organism that obtains its energy and nutrients by consuming other organisms. In this case, a rabbit is a perfect example of a heterotroph as it relies on consuming plants or other animals for its survival. Grass, wheat, and seaweed, on the other hand, are examples of autotrophs, which can produce their own energy through photosynthesis.Rate this question:
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- 24.
A group of similar ecosystems with the same general abiotic factors and primary producers is called a ____________________.
Correct Answer
biomeExplanation
A group of similar ecosystems with the same general abiotic factors and primary producers is called a biome. Biomes are large-scale communities characterized by specific climate conditions, such as temperature and precipitation, which determine the types of organisms that can thrive there. They can include various types of ecosystems, such as deserts, forests, grasslands, and tundras, which share similar characteristics and support similar types of plant and animal life. Biomes are important for understanding and studying the distribution and interactions of organisms on a global scale.Rate this question:
- 25.
_________________is the average weather in an area over a long period of time.
Correct Answer
climateExplanation
Climate is the average weather in an area over a long period of time. It represents the long-term patterns and trends of temperature, precipitation, humidity, wind, and other atmospheric conditions in a specific region. Climate is different from weather, which refers to the short-term and day-to-day variations in atmospheric conditions. The study of climate helps scientists understand and predict weather patterns, as well as analyze the impact of human activities on the Earth's climate system.Rate this question:
- 26.
Major temperature changes are based on
- A.
Land masses
- B.
Climate
- C.
Latitude
Correct Answer
C. LatitudeExplanation
Latitude is the angular distance of a location from the equator. It plays a significant role in determining the temperature of a place. As latitude increases, the distance from the equator also increases, resulting in cooler temperatures. This is because the sun's rays are spread over a larger area, leading to less heat reaching the surface. Conversely, as latitude decreases, the distance from the equator decreases, resulting in warmer temperatures. Therefore, latitude is a key factor in major temperature changes across different regions.Rate this question:
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- 27.
Land near the ocean may have
- A.
Colder winters and warmer summers
- B.
Cooler summers and warmer winters
- C.
Warmer winters and warmer summers
- D.
Cooler summers and cooler winters
Correct Answer
B. Cooler summers and warmer wintersExplanation
Land near the ocean tends to have cooler summers and warmer winters because of the moderating effect of the water. During the summer, the ocean water is cooler than the land, which results in cooler air temperatures near the coast. In winter, the ocean retains heat better than land, so the air near the coast is warmer compared to inland areas. This phenomenon is known as the maritime effect and is caused by the ocean's ability to absorb and release heat more slowly than land.Rate this question:
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- 28.
Precipitation increases moisture in a climate.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Precipitation, such as rain or snow, adds moisture to the climate. When it rains or snows, water is added to the atmosphere and the ground, increasing the overall moisture content. This moisture is important for the growth of plants, the replenishment of water sources, and the overall balance of ecosystems. Therefore, the statement that precipitation increases moisture in a climate is true.Rate this question:
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- 29.
Evaporation increases the moisture in a climate.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Evaporation actually decreases the moisture in a climate. When water evaporates, it turns into vapor and leaves the atmosphere, reducing the amount of moisture present. This can lead to drier conditions in the climate.Rate this question:
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- 30.
Nearness to the ocean and mountain ranges may also influence the amount of precipitation an area receives
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The statement suggests that the proximity of an area to the ocean and mountain ranges can affect the amount of precipitation it receives. This is because the ocean is a major source of moisture through evaporation, and mountains can cause air to rise and cool, leading to condensation and precipitation. Therefore, it is true that nearness to the ocean and mountain ranges can influence the amount of precipitation in an area.Rate this question:
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- 31.
The major producers in terrestrial biomes are
- A.
Mice
- B.
Birds
- C.
Plants
- D.
Rabbits
Correct Answer
C. PlantsExplanation
Plants are the major producers in terrestrial biomes because they are capable of photosynthesis, a process in which they convert sunlight, water, and carbon dioxide into glucose and oxygen. This ability allows them to produce their own food and energy, making them the primary source of energy for other organisms in the ecosystem. Mice, birds, and rabbits are consumers in the food chain, relying on plants for their survival.Rate this question:
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- 32.
____________ biomes which are limited by the availability of sunlight and the concentration of dissolved nutrients in the water.
Correct Answer
aquaticExplanation
Aquatic biomes are types of ecosystems that are primarily found in water, such as oceans, lakes, rivers, and wetlands. These biomes are limited by the availability of sunlight and the concentration of dissolved nutrients in the water. Sunlight is crucial for photosynthesis, which is the process by which plants and algae produce energy. Therefore, the amount of sunlight available in aquatic biomes directly affects the productivity and diversity of organisms. Additionally, the concentration of dissolved nutrients, such as nitrogen and phosphorus, is essential for the growth and survival of aquatic organisms. The correct answer, "aquatic," accurately reflects the biomes that are limited by these factors.Rate this question:
- 33.
Water near the bottom of the lakes and oceans may contain more nutrients than water closer to the surface.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Water near the bottom of lakes and oceans may contain more nutrients than water closer to the surface because nutrients like nitrogen and phosphorus tend to sink to the bottom due to gravity and the process of settling. This is known as nutrient stratification. Additionally, organic matter and decaying organisms also sink to the bottom, contributing to the higher nutrient concentration. This nutrient-rich water at the bottom supports the growth of benthic organisms and serves as a source of nutrients for the entire aquatic ecosystem.Rate this question:
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- 34.
Freshwater biomes have water that contains little or no _______________________.
Correct Answer
saltExplanation
Freshwater biomes are characterized by the absence or low concentration of salt in the water. Unlike saltwater biomes such as oceans and seas, freshwater biomes include lakes, rivers, streams, and ponds that have water with very little or no salt content. This lack of salt makes freshwater biomes suitable for various organisms that cannot tolerate high salinity levels. These biomes support a diverse range of plants, animals, and microorganisms that have adapted to thrive in freshwater environments.Rate this question:
- 35.
_____________________ is an area that is saturated with water or covered by water for at least one season of the year.
Correct Answer
wetlandExplanation
A wetland is an area that is saturated with water or covered by water for at least one season of the year. It is characterized by its unique soil types and vegetation, which are adapted to the wet conditions. Wetlands play a crucial role in maintaining biodiversity, acting as habitats for various plant and animal species. They also provide important ecosystem services such as water purification, flood control, and carbon storage. Due to their ecological significance, wetlands are protected and conserved in many countries to ensure their preservation and sustainable use.Rate this question:
- 36.
_________________________________ slow down runoff and help prevent erosion.
Correct Answer
freshwater, producersExplanation
Freshwater and producers can slow down runoff and help prevent erosion by their combined actions. Freshwater bodies such as rivers, lakes, and wetlands act as natural buffers, absorbing and storing excess rainfall. This reduces the volume and speed of runoff, preventing it from eroding the surrounding land. Producers, such as plants and algae, play a crucial role in stabilizing soil and preventing erosion. Their roots hold the soil in place, while their above-ground biomass acts as a physical barrier against the force of flowing water. Together, freshwater and producers work to protect the land from erosion caused by runoff.Rate this question:
- 37.
Terrestrial biomes are determined mainly by __________________.
Correct Answer
climateExplanation
Terrestrial biomes, which refer to the different types of ecosystems found on land, are primarily determined by climate. Climate, including factors such as temperature, precipitation, and sunlight, plays a crucial role in shaping the characteristics and distribution of different biomes. It influences the types of plants and animals that can survive in a particular area, as well as the overall ecosystem dynamics. For example, tropical rainforests thrive in hot and humid climates, while deserts are found in arid regions with low precipitation. Therefore, climate is the main factor that determines the characteristics and boundaries of terrestrial biomes.Rate this question:
- 38.
What are the types of tundra?
- A.
Alaska and Canada
- B.
Arctic and Alpine
- C.
Antarctica and Arctic
Correct Answer
B. Arctic and AlpineExplanation
The correct answer is Arctic and Alpine. The tundra is a type of biome characterized by extremely cold temperatures and low-growing vegetation. The Arctic tundra is found in the northernmost regions of the Earth, including parts of Alaska and Canada. It is located around the Arctic Circle and experiences long, cold winters and short summers. The Alpine tundra, on the other hand, is found in high mountain regions around the world, including the Alps, Rockies, and Himalayas. It is characterized by similar cold temperatures and low-growing vegetation, but it is found at high elevations rather than high latitudes.Rate this question:
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- 39.
An energy pyramid is used to show _________.
- A.
The layout of organisms in any order seen fit
- B.
The amount of energy in the universe
- C.
The amount of energy at each trophic level
Correct Answer
C. The amount of energy at each tropHic levelExplanation
An energy pyramid is a visual representation that illustrates the amount of energy available at each trophic level in an ecosystem. It shows that energy decreases as it moves up the food chain, with the most energy being available at the producer level and progressively less energy available at each subsequent level. This helps to demonstrate the importance of primary producers in sustaining the energy flow within an ecosystem and the limited energy available to higher-level consumers.Rate this question:
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- 40.
The sun is the source of energy on earth.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The sun is indeed the source of energy on Earth. It provides heat and light through a process called nuclear fusion, where hydrogen atoms combine to form helium and release a tremendous amount of energy. This energy is then radiated as sunlight and reaches the Earth, where it is essential for various biological processes such as photosynthesis in plants and the regulation of temperature. Without the sun, life on Earth would not be possible as it is the primary source of energy for all living organisms.Rate this question:
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- 41.
Which number on the diagram below shows the location of the secondary consumers?
- A.
3
- B.
2
- C.
1
Correct Answer
A. 3 -
- 42.
In an energy pyramid, which way does energy transfer?
- A.
From the top of the pyramid to the bottom
- B.
From the bottom of the pyramid to the top
- C.
None of these
- D.
Both of these
Correct Answer
B. From the bottom of the pyramid to the topExplanation
In an energy pyramid, energy transfers from the bottom of the pyramid to the top. This is because the primary producers, such as plants, capture energy from the sun through photosynthesis and convert it into chemical energy. This energy is then transferred to the primary consumers, such as herbivores, when they consume the plants. The energy continues to flow up the pyramid as it is transferred from one trophic level to the next, with each level consuming the level below it. Therefore, the correct answer is "From the bottom of the pyramid to the top."Rate this question:
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- 43.
Look at the following energy pyramid. If the producers have 7000 kcal of energy, how much energy will be available for the Sheephead ?fish?
- A.
7 kcal
- B.
70 kcal
- C.
700 kcal
- D.
7000 kcal
Correct Answer
B. 70 kcalExplanation
The energy pyramid shows the flow of energy in an ecosystem, with each level consuming a portion of the energy from the level below. In this case, if the producers have 7000 kcal of energy, the Sheephead fish, being a primary consumer, will only receive a fraction of that energy. This is because only about 10% of the energy is transferred from one trophic level to the next. Therefore, the Sheephead fish will have approximately 700 kcal of energy available to them, which is closest to the answer of 70 kcal.Rate this question:
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- 44.
Giant Sea Bass do not get as much energy from eating the same amount of food as sea urchin. Which statement best describes the reason.
- A.
Sea urchins move around less than sea bass
- B.
Sea urchins live on less energy that bass
- C.
Sea urchins are bigger than sea bass
- D.
Sea urchin use much of their energy for life processes
Correct Answer
D. Sea urchin use much of their energy for life processesExplanation
Sea urchins use much of their energy for life processes. This statement best describes the reason why Giant Sea Bass do not get as much energy from eating the same amount of food as sea urchins. This means that a significant amount of energy obtained from food by sea urchins is utilized for their basic life functions, such as growth, reproduction, and maintenance, leaving less energy available for other activities like growth and movement.Rate this question:
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- 45.
Which level of this food pyramid represents the largest amount of organisms?
- A.
Tertiary consumers
- B.
Secondary consumers
- C.
Primary consumers
- D.
Producers
Correct Answer
D. ProducersExplanation
Producers represent the largest amount of organisms in the food pyramid. Producers, such as plants, are able to convert sunlight into energy through photosynthesis. They are at the bottom of the food pyramid and form the base of the ecosystem. Primary consumers, secondary consumers, and tertiary consumers rely on producers for their energy and nutrients. As energy is transferred up the food pyramid, the number of organisms decreases, making producers the level with the largest amount of organisms.Rate this question:
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- 46.
Which of these best describes the relationship shown by this Kelp Forest Ecosystempyramid?
- A.
The Giant Sea Bass is a predator of the Sheephead
- B.
The Giant Sea Bass is the prey of the Sheephead
- C.
Sea Urchins are the prey of the Kelp.
- D.
Sheepheads are the predator of the Giant Sea Bass
Correct Answer
A. The Giant Sea Bass is a predator of the SheepHeadExplanation
The correct answer is "The Giant Sea Bass is a predator of the Sheephead." This means that the Giant Sea Bass hunts and feeds on the Sheephead. In a food chain or ecosystem pyramid, predators are usually higher up and feed on the organisms below them in the pyramid. In this case, the Giant Sea Bass is positioned higher than the Sheephead, indicating that it preys on the Sheephead.Rate this question:
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- 47.
If birds eat insects that feed on corn, which pyramid level would birds occupy?
- A.
A
- B.
B
- C.
C
- D.
D
Correct Answer
B. BExplanation
Birds would occupy pyramid level B. This is because birds are secondary consumers, meaning they eat primary consumers (insects) that feed on corn. In a pyramid of energy or biomass, each level represents a different trophic level, with producers at the bottom, followed by primary consumers, secondary consumers, and so on. Therefore, birds, as secondary consumers, would be placed at pyramid level B.Rate this question:
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- 48.
As one progresses from level D to level A in this pyramid, the amount of stored energy?
- A.
Increases
- B.
Decreases
- C.
Remains the same
Correct Answer
B. DecreasesExplanation
As one progresses from level D to level A in this pyramid, the amount of stored energy decreases. This is because energy is lost as it moves up the food chain. At each level, organisms use some of the energy they consume for their own metabolic processes, and the remaining energy is passed on to the next level. This means that there is less energy available at higher levels of the pyramid compared to lower levels. Therefore, as we move up from level D to level A, the amount of stored energy decreases.Rate this question:
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Current Version
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Mar 22, 2023Quiz Edited by
ProProfs Editorial Team -
Apr 19, 2018Quiz Created by
Jane
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