1.
Which of these animals is closely related to sharks?
Correct Answer
D. Manta Ray
Explanation
Manta Rays are closely related to sharks because they both belong to the same group of cartilaginous fish called Elasmobranchs. They share similar characteristics such as a skeleton made of cartilage, a streamlined body shape, and gill slits for respiration. Manta Rays and sharks also have similar reproductive strategies and feeding habits, making them closely related within the animal kingdom.
2.
Which of the following is an order of reptile?
Correct Answer
C. Crocodilian
Explanation
Crocodilian is the correct answer because it refers to a group of reptiles that includes crocodiles, alligators, and caimans. They are characterized by their long snouts, powerful jaws, and ability to live in both freshwater and saltwater habitats. Crocodilians are considered reptiles because they have scaly skin, lay eggs, and are cold-blooded.
3.
Which term refers to the shedding of the skin?
Correct Answer
B. Molting
Explanation
Molting refers to the process of shedding the skin. It is a natural phenomenon that occurs in various animals, including reptiles, insects, and birds. During molting, the old skin is discarded and replaced with a new one. This process allows for growth, repair, and regeneration of the skin. It is an essential part of the life cycle for many species and helps them adapt to their changing environment.
4.
Which of these is a bird?
Correct Answer
D. Blue-Footed Booby
Explanation
The Blue-Footed Booby is a bird because it is a species of marine bird found in the tropical and subtropical regions of the Pacific Ocean. It is known for its distinctive bright blue feet, which are used in courtship displays. The other options listed are not birds. A Sugar Glider is a small marsupial, a Blue-Tongued Skink is a type of lizard, and a Blue Whale is a marine mammal.
5.
What mammal group are humans in?
Correct Answer
D. Placental
Explanation
Humans are classified as placental mammals. Placental mammals are a group of mammals that give birth to live young, who develop inside the mother's uterus and are nourished by a placenta. This is in contrast to marsupials, which give birth to underdeveloped young that continue to develop outside the mother's body, and egg-laying mammals, which lay eggs instead of giving birth. Humans, like other placental mammals, have a placenta that allows for the exchange of nutrients and waste between the mother and the developing fetus.
6.
What allows some birds such as chickens to digest hard materials such as seeds?
Correct Answer
A. Gizzard
Explanation
The gizzard is a muscular organ found in birds that helps them digest hard materials such as seeds. It is a part of the digestive system and is responsible for grinding and breaking down tough food items. The gizzard contains small stones or grit that help in the mechanical breakdown of food, as birds do not have teeth to chew their food. This allows birds like chickens to effectively digest and extract nutrients from hard materials.
7.
What type of circulatory system pumps blood into cavities instead of through vessels?
Correct Answer
C. Open Circulatory System
Explanation
An open circulatory system is a type of circulatory system where blood is pumped into cavities instead of through vessels. In this system, the blood flows freely through the body cavity, bathing the organs and tissues directly. This type of circulatory system is found in many invertebrates, such as insects and mollusks. It is characterized by a lower pressure and slower flow of blood compared to closed circulatory systems, where blood is contained within vessels.
8.
What blood vessels take blood away from the heart?
Correct Answer
D. Arteries
Explanation
Arteries are the blood vessels that carry oxygenated blood away from the heart to the rest of the body. They have thick, muscular walls that help to maintain blood pressure and ensure efficient blood flow. Veins, on the other hand, carry deoxygenated blood back to the heart, while capillaries are tiny blood vessels that connect arteries and veins, allowing for the exchange of oxygen, nutrients, and waste products between the blood and tissues. Therefore, arteries are the correct answer as they are specifically responsible for carrying blood away from the heart.
9.
Of which body system is the kidney an organ?
Correct Answer
A. Excretory System
Explanation
The kidney is an organ of the excretory system. It plays a crucial role in filtering waste products and excess fluids from the blood, producing urine, and maintaining the body's fluid balance. The excretory system is responsible for eliminating metabolic waste and toxins from the body, ensuring the proper functioning of other systems. The kidney's main function aligns with the goals of the excretory system, making it the correct answer.
10.
What type of tissue makes up the femur?
Correct Answer
D. Bone
Explanation
The femur is the longest and strongest bone in the human body, making up the thigh bone. It is composed of dense and strong osseous tissue, which gives it the ability to withstand large amounts of weight and pressure. The other options, such as muscle, skin, and cartilage, do not have the necessary structural integrity to form the femur.
11.
Which of the following is produced by meiosis?
Correct Answer
C. Egg
Explanation
Meiosis is a type of cell division that occurs in sexually reproducing organisms. It results in the formation of gametes, which are sex cells such as eggs and sperm. Since the question asks which of the given options is produced by meiosis, the correct answer is "Egg." Meiosis specifically leads to the production of haploid cells, which have half the number of chromosomes as the parent cell. Eggs are the female gametes produced through meiosis and are essential for sexual reproduction in most organisms.
12.
What process produces a duplicate of the original cell?
Correct Answer
C. Mitosis
Explanation
Mitosis is the process that produces a duplicate of the original cell. During mitosis, a single cell divides into two identical daughter cells, each containing the same genetic information as the parent cell. This process is essential for growth, development, and tissue repair in multicellular organisms. Mitosis ensures that each new cell receives a complete set of chromosomes and is genetically identical to the original cell.
13.
What type of reproduction uses only one parent cell?
Correct Answer
B. Asexual Reproduction
Explanation
Asexual reproduction is the correct answer because it involves the production of offspring from a single parent cell without the involvement of gametes or the fusion of genetic material from two different cells. This type of reproduction is common in many organisms, such as bacteria, fungi, and some plants and animals. It allows for rapid reproduction and colonization of new environments, as offspring are genetically identical to the parent. In contrast, sexual reproduction involves the fusion of gametes from two different parents, resulting in offspring with a combination of genetic material from both parents.
14.
What is the rhythmic repetition surrounding the planetary day called?
Correct Answer
D. Circadian Rhythm
Explanation
The correct answer is Circadian Rhythm. Circadian rhythm refers to the natural 24-hour cycle that regulates various biological processes in living organisms, including sleep-wake cycles, hormone production, and body temperature. It is often influenced by external cues, such as light and darkness, and helps to maintain a regular pattern of physiological and behavioral functions. This rhythmic repetition surrounding the planetary day is essential for maintaining overall health and well-being.
15.
When a dog repeats a learned behavior and gets a reward, what process is shown?
Correct Answer
A. Conditioning
Explanation
When a dog repeats a learned behavior and gets a reward, the process that is shown is conditioning. Conditioning refers to the process of training an animal to associate a specific behavior with a reward or punishment. In this case, the dog has learned a behavior and is reinforced with a reward, which strengthens the association between the behavior and the reward. This conditioning process helps the dog to understand what behaviors are desired and encourages them to repeat those behaviors in the future.
16.
Which of these is a chemical form of communication?
Correct Answer
B. pHeromone
Explanation
Pheromones are a chemical form of communication used by many animals and insects to communicate with others of the same species. These chemical signals are released into the environment and can convey messages about mating, territory, alarm, or other important information. Memory, phantasm, and gasoline are not chemical forms of communication.
17.
What is the tissue that gives rise to the xylem and phloem?
Correct Answer
C. Cambium
Explanation
Cambium is the tissue that gives rise to the xylem and phloem. It is a layer of actively dividing cells located between the xylem and phloem in the stems and roots of vascular plants. The cambium is responsible for the secondary growth of the plant, which results in the formation of new xylem cells towards the inside and new phloem cells towards the outside. This allows for the transport of water, nutrients, and sugars throughout the plant.
18.
What type of root does grass have?
Correct Answer
D. Fibrous Root
Explanation
Grass has fibrous roots. Fibrous roots are thin and spread out in a dense network, providing stability and preventing soil erosion. They do not have a main central root (taproot) like some other plants. Instead, the fibrous roots branch out extensively, allowing grass to effectively absorb water and nutrients from the soil. This type of root system is well-suited for grasses, as it helps them survive in various environmental conditions and withstand grazing or mowing.
19.
Which type of roots grow above ground?
Correct Answer
C. Aerial Roots
Explanation
Aerial roots are a type of roots that grow above the ground. They are commonly found in plants like mangroves and orchids. Aerial roots serve various purposes such as providing support to the plant, absorbing moisture from the air, and even helping with photosynthesis. These roots often have a specialized structure that allows them to cling onto surfaces such as tree trunks or rocks. Overall, aerial roots are an adaptation that enables plants to thrive in specific environments and conditions.
20.
What type of plants always contain a xylem and phloem?
Correct Answer
C. Vascular Plants
Explanation
Vascular plants always contain xylem and phloem, which are specialized tissues responsible for transporting water, nutrients, and sugars throughout the plant. Xylem transports water and minerals from the roots to the rest of the plant, while phloem transports sugars produced during photosynthesis to different parts of the plant. This transport system allows vascular plants to grow larger and more complex compared to nonvascular plants, which lack xylem and phloem. Filling plants and greening plants are not recognized terms in botany, so they are not the correct answer.