1. What is the primary function of the respiratory system in animals?
a. Circulation of blood
b. Digestion of food
c. Exchange of gases
d. Removal of metabolic waste
Answer: c. Exchange of gases
2. Which hormone is responsible for regulating blood glucose levels in animals?
a. Insulin
b. Glucagon
c. Thyroxine
d. Estrogen
Answer: a. Insulin
3. In which organ does the majority of nutrient absorption occur in the digestive system of animals?
a. Stomach
b. Liver
c. Small intestine
d. Large intestine
Answer: c. Small intestine
4. What is the main function of the kidneys in the excretory system of animals?
a. Filtration of blood
b. Digestion of proteins
c. Synthesis of urine
d. Storage of bile
Answer: a. Filtration of blood
5. Which part of the nervous system is responsible for involuntary actions such as heartbeat and digestion?
a. Central nervous system
b. Peripheral nervous system
c. Autonomic nervous system
d. Somatic nervous system
Answer: c. Autonomic nervous system
6. What role do red blood cells play in the circulatory system of animals?
a. Transport of oxygen
b. Immune defense
c. Clotting of blood
d. Synthesis of hormones
Answer: a. Transport of oxygen
7. Which of the following is an example of a connective tissue in animals?
a. Muscle tissue
b. Epithelial tissue
c. Nervous tissue
d. Blood
Answer: d. Blood
8. What is the purpose of the endocrine system in animals?
a. Regulation of body temperature
b. Coordination and control using hormones
c. Oxygen transport
d. Digestion of carbohydrates
Answer: b. Coordination and control using hormones
9. Which type of muscle is striated and under voluntary control in animals?
a. Smooth muscle
b. Cardiac muscle
c. Skeletal muscle
d. Involuntary muscle
Answer: c. Skeletal muscle
10. What is the function of the gallbladder in the digestive system of animals?
a. Production of bile
b. Storage and concentration of bile
c. Synthesis of enzymes
d. Absorption of nutrients
Answer: b. Storage and concentration of bile
11. What is the primary function of the cerebrum in the nervous system of animals?
a. Coordination of muscle movements
b. Regulation of body temperature
c. Control of voluntary actions and sensory perception
d. Synthesis of neurotransmitters
Answer: c. Control of voluntary actions and sensory perception
12. Which hormone is responsible for the fight-or-flight response in animals during stress situations?
a. Cortisol
b. Insulin
c. Epinephrine (Adrenaline)
d. Thyroxine
Answer: c. Epinephrine (Adrenaline)
13. In the respiratory system of animals, what is the role of surfactant in the lungs?
a. Oxygen transport
b. Protection against infections
c. Facilitation of gas exchange
d. Reduction of surface tension
Answer: d. Reduction of surface tension
14. Which part of the brain is responsible for regulating basic bodily functions such as heartbeat and breathing?
a. Cerebrum
b. Cerebellum
c. Medulla oblongata
d. Hypothalamus
Answer: c. Medulla oblongata
15. What is the function of the vestibular system in animals?
a. Temperature regulation
b. Balance and spatial orientation
c. Digestion of food
d. Synthesis of neurotransmitters
Answer: b. Balance and spatial orientation
16. Which hormone is crucial for the development and maintenance of male secondary sexual characteristics?
a. Estrogen
b. Progesterone
c. Testosterone
d. FSH (Follicle Stimulating Hormone)
Answer: c. Testosterone
17. What role does bile play in the digestive system of animals?
a. Emulsification of fats
b. Digestion of proteins
c. Absorption of glucose
d. Activation of enzymes
Answer: a. Emulsification of fats
18. In the process of osmoregulation, what is the role of the kidneys in animals?
a. Filtration of blood
b. Regulation of water and ion balance
c. Synthesis of hormones
d. Digestion of proteins
Answer: b. Regulation of water and ion balance
19. What is the primary function of the pancreas in the endocrine system of animals?
a. Regulation of blood glucose levels
b. Synthesis of insulin
c. Filtration of blood
d. Digestion of lipids
Answer: a. Regulation of blood glucose levels
20. Which of the following is a function of the integumentary system in animals?
a. Regulation of body temperature
b. Synthesis of red blood cells
c. Oxygen transport
d. Coordination of muscle movements
Answer: a. Regulation of body temperature
21. Because of the presence of _________, spider blood typically has a blue color.
1. Hemerythrin
2. Hemoglobin
3. Hemocyanin
4. none of the aforementioned.
Answer- Option (3) is correct.
22. Which of the following organisms exhibits diploblastic organization?
1. Hydra,
2. Earthworms,
3. Squid,
4. Crabs.
Answer- Option (1) is correct.
23. Theropod dinosaurs have contemporary descendants known as _________.
1. Birds,
2. Lions,
3. Panthers,
4. Bears
Answer- Option (1) is correct.
24. Not all of the following animals are tetrapods. Select the odd one out.
1. Snake,
2. Cow,
3. Mantis,
4. Shrimp.
Answer- Option (1) is correct.
25. ___________utilize book lungs for respiration.
1. Earthworms
2. Scorpions
3. Fish
4. None of the above
Answer- Option (1) is correct.
26. Which cell in a person’s body is the biggest?
1. Macrophage
2. Ovum
3. Granule cell
4. None of the above
Answer- Option (2) is correct.
27. Identify the hormone that causes the smooth uterine muscle to contract during animal parturition. This hormone is released by the pituitary gland.
1. Vasopressin
2. Oxytocin
3. Prolactin
4. Gonadotropins
Answer- Option (2) is correct.
28. Hormones that influence cells at the time of their creation and are circulated through the blood are
1. Estradiol, cortisol,
2. prostaglandins, and thromboxane
3. prednisolone, and prednisone
4. thyroxine, and glucagon
Answer- Option (2) is correct.
29. Sperm swimming toward the egg is prevented by a spermicide used for contraception, which inhibits sperm flagellar movement. What accomplishes this?
1. breaking the microfilaments
2. blocking the kinesin motor protein
3. breaking down microtubules
4. blocking the dynein motor protein
Answer- Option (4) is correct.
30. What is the dental equation for a grown-up person?
1. 2133/2133
2. 2123/2123
3. 2103/2103
4. 123/0123
Answer- Option (2) is correct.
31. The vertebral column in the human body has ______ no of bones?
1. 33
2. 43
3. 23
4. 56
Answer- Option (1) is correct.
32. A typical example of an open vascular system is found in
1. crabs
2. monkeys
3. crows
4. humans
Answer- Option (1) is correct.
33. Which of the following structures ensures that blood in animals flows in a single direction?
1. Bronchiole,
2. Neuron,
3. Septum,
4. Valves.
Answer- Option (4) is correct.
34. What is the structural and operational component of the mammalian nervous system?
1. Axon,
2. Dendron,
3. Neuron,
4. Brain.
Answer- Option (3) is correct.
35. Which of the following describes the human eye’s innermost layer?
1. Retina,
2. Choroid,
3. Sclera,
4. Cornea.
Answer- Option (1) is correct.