Animal Physiology — MCQs Biology 50 min Score: 0 Attempted: 0/50 Subscribe 1. Animal physiology is the study of: (A) Structure of body organs (B) Functions of body organs and systems (C) Animal behavior (D) Animal evolution 2. In vertebrates, the circulatory system is: (A) Closed (B) Open (C) Absent (D) Partial 3. Fish have a: (A) Two-chambered heart (B) Three-chambered heart (C) Four-chambered heart (D) Five-chambered heart 4. Amphibians have a: (A) One-chambered heart (B) Two-chambered heart (C) Four-chambered heart (D) Three-chambered heart 5. Reptiles (except crocodiles) have: (A) One-chambered heart (B) Two-chambered heart (C) Four-chambered heart (D) Three-chambered heart 6. Crocodiles and birds have: (A) Four-chambered heart (B) Two-chambered heart (C) Three-chambered heart (D) One-chambered heart 7. Mammals have: (A) One-chambered heart (B) Three-chambered heart (C) Two-chambered heart (D) Four-chambered heart 8. Fish respiration occurs via: (A) Skin (B) Lungs (C) Gills (D) Spiracles 9. Amphibians respire through: (A) Gills only (B) Lungs only (C) Skin, lungs, and gills (larvae) (D) Spiracles only 10. Reptiles respire through: (A) Skin only (B) Gills (C) Lungs (D) Spiracles only 11. Birds respire through: (A) Lungs with air sacs (B) Gills (C) Skin only (D) Lungs without air sacs 12. Mammals respire through: (A) Air sacs only (B) Gills (C) Lungs with diaphragm (D) Skin only 13. Vertebrate excretion is mainly through: (A) Skin (B) Kidneys (C) Cloaca (D) Gills only 14. Excretory product of mammals is: (A) None (B) Ammonia (C) Uric acid only (D) Urea 15. Excretory product of birds and reptiles is: (A) Ammonia (B) Urea (C) Uric acid (D) None 16. Excretory product of fish and amphibians is: (A) Ammonia (B) Uric acid (C) Urea (D) None 17. Fish are: (A) Endothermic (B) Ectothermic (C) Warm-blooded (D) Terrestrial 18. Amphibians are: (A) Endothermic (B) Ectothermic (C) Warm-blooded (D) Birds 19. Reptiles are: (A) Ectothermic (B) Endothermic (C) Warm-blooded (D) Birds 20. Birds are: (A) Cold-blooded (B) Ectothermic (C) Endothermic (D) Amphibious 21. Mammals are: (A) Cold-blooded (B) Ectothermic (C) Endothermic (D) Amphibians 22. Vertebrate digestion is: (A) Incomplete (B) Complete (mouth to anus) (C) Absent (D) Single-chambered 23. Carnivorous vertebrates have: (A) Sharp teeth and short intestines (B) Flat teeth only (C) Long intestines only (D) No teeth 24. Herbivorous vertebrates have: (A) Short intestines only (B) Sharp teeth (C) Flat teeth and long intestines (D) No teeth 25. Omnivorous vertebrates have: (A) No teeth (B) Only flat teeth (C) Only sharp teeth (D) Combination of sharp and flat teeth 26. Vertebrate nervous system is: (A) Ventral only (B) Dorsal, hollow, and highly developed (C) Simple nerve net (D) Absent 27. Brain of vertebrates is divided into: (A) Only midbrain (B) Only forebrain (C) Forebrain, midbrain, hindbrain (D) Only hindbrain 28. Vertebrate sense organs include: (A) Only nose (B) Only eyes (C) Only ears (D) Eyes, ears, nose, tongue, skin 29. Fish have: (A) Only ears (B) Lateral line system for detecting vibrations (C) Only skin receptors (D) Only eyes 30. Bird wings are adapted for: (A) Digestion (B) Walking (C) Swimming (D) Flight 31. Amphibians exhibit: (A) Metamorphosis (B) Direct development only (C) Budding (D) Parthenogenesis 32. Reptiles reproduce by: (A) Internal fertilization (B) External fertilization (C) Budding (D) Parthenogenesis 33. Birds reproduce by: (A) Parthenogenesis (B) External fertilization (C) Budding (D) Internal fertilization 34. Mammals reproduce by: (A) Budding (B) External fertilization (C) Internal fertilization and viviparity (except monotremes) (D) Parthenogenesis 35. Monotremes lay: (A) Eggs (B) Live young (C) Spores (D) Buds 36. Marsupials give birth to: (A) Underdeveloped young that complete development in pouch (B) Fully developed young (C) Eggs (D) Spores 37. Mammals produce: (A) Only pouches (B) Only eggs (C) Only spores (D) Milk from mammary glands 38. Vertebrate blood transports: (A) Only nutrients (B) Only oxygen (C) Only carbon dioxide (D) Oxygen, carbon dioxide, nutrients, and waste 39. Vertebrate blood contains: (A) Only red blood cells (B) Red blood cells, white blood cells, platelets, plasma (C) Only white blood cells (D) Only plasma 40. Vertebrate hormones are secreted by: (A) Exocrine glands only (B) Endocrine glands (C) Skin (D) Kidneys only 41. Vertebrate homeostasis is maintained by: (A) Only skeleton (B) Nervous and endocrine systems (C) Only muscles (D) Only skin 42. Vertebrate locomotion depends on: (A) Muscles and skeleton (B) Only skeleton (C) Only muscles (D) Only fins 43. Vertebrate digestion involves: (A) Mouth, esophagus, stomach, intestine, anus (B) Only stomach (C) Only mouth (D) Only intestine 44. Vertebrate excretion removes: (A) Nutrients (B) Oxygen (C) Carbon dioxide (D) Nitrogenous wastes 45. Fish maintain buoyancy using: (A) Lungs (B) Swim bladder (C) Gills only (D) Fins only 46. Birds maintain body temperature using: (A) Feathers and metabolism (B) Gills (C) Skin only (D) Air sacs only 47. Mammals maintain body temperature using: (A) Hair and metabolism (B) Skin only (C) Lungs only (D) Fins only 48. Vertebrate blood circulation is: (A) Double in birds and mammals (B) Single only (C) Triple only (D) Absent 49. Vertebrate muscles are: (A) Skeletal, smooth, and cardiac (B) Only skeletal (C) Only smooth (D) Only cardiac 50. Vertebrate physiology studies: (A) Functions of organs and systems (B) Only structure (C) Only behavior (D) Only genetics