Zoology — MCQs

1. Which of the following is the basic unit of classification in Zoology?
(A) Phylum
(B) Species
(C) Genus
(D) Family

2. The branch of Zoology that deals with the study of insects is called:
(A) Ichthyology
(B) Entomology
(C) Ornithology
(D) Herpetology

3. The study of birds is known as:
(A) Ornithology
(B) Herpetology
(C) Mammalogy
(D) Malacology

4. Which scientist is known as the “Father of Zoology”?
(A) Darwin
(B) Aristotle
(C) Linnaeus
(D) Lamarck

5. Which of the following organisms is diploblastic?
(A) Hydra
(B) Earthworm
(C) Cockroach
(D) Frog

6. The notochord is present in members of:
(A) Mollusca
(B) Arthropoda
(C) Chordata
(D) Annelida

7. Which of the following animals is a coelenterate?
(A) Hydra
(B) Earthworm
(C) Spider
(D) Snail

8. Which of the following is not an invertebrate?
(A) Octopus
(B) Starfish
(C) Snake
(D) Cockroach

9. Which of the following is a cold-blooded animal?
(A) Pigeon
(B) Human
(C) Frog
(D) Cow

10. Which of the following animals has a three-chambered heart?
(A) Fish
(B) Frog
(C) Mammals
(D) Birds

11. The exoskeleton of insects is made of:
(A) Cellulose
(B) Chitin
(C) Keratin
(D) Collagen

12. Which of the following is a viviparous animal?
(A) Lizard
(B) Hen
(C) Cow
(D) Crocodile

13. Which of the following phyla contains animals with jointed appendages?
(A) Annelida
(B) Arthropoda
(C) Mollusca
(D) Echinodermata

14. In mammals, fertilization usually takes place in the:
(A) Ovary
(B) Uterus
(C) Fallopian tube
(D) Cervix

15. The largest phylum of the animal kingdom is:
(A) Chordata
(B) Arthropoda
(C) Mollusca
(D) Annelida

16. Which of the following is a cartilaginous fish?
(A) Shark
(B) Rohu
(C) Tuna
(D) Salmon

17. The largest living mammal is:
(A) Elephant
(B) Blue Whale
(C) Giraffe
(D) Hippopotamus

18. Amphibians are animals that:
(A) Live only in water
(B) Live only on land
(C) Live both on land and in water
(D) Fly in air

19. Which animal shows metamorphosis?
(A) Hydra
(B) Butterfly
(C) Earthworm
(D) Lizard

20. Which of the following is a marsupial?
(A) Dog
(B) Kangaroo
(C) Cat
(D) Rabbit

21. Which of the following has a water vascular system?
(A) Starfish
(B) Snail
(C) Hydra
(D) Earthworm

22. In which animal does the male seahorse carry the young?
(A) Seahorse
(B) Frog
(C) Shark
(D) Whale

23. Which of the following is a flightless bird?
(A) Crow
(B) Sparrow
(C) Ostrich
(D) Pigeon

24. Which part of the body do insects use for breathing?
(A) Lungs
(B) Gills
(C) Tracheae
(D) Skin

25. Which of the following is a warm-blooded animal?
(A) Snake
(B) Lizard
(C) Pigeon
(D) Frog

26. Which mammal lays eggs?
(A) Whale
(B) Platypus
(C) Bat
(D) Tiger

27. Which of the following is an echinoderm?
(A) Starfish
(B) Octopus
(C) Crab
(D) Jellyfish

28. What is the main excretory organ in earthworm?
(A) Kidney
(B) Nephridia
(C) Malpighian tubules
(D) Flame cells

29. Which of the following is an example of cnidaria?
(A) Hydra
(B) Snail
(C) Earthworm
(D) Cockroach

30. The scientific name of the housefly is:
(A) Musca domestica
(B) Apis mellifera
(C) Rana tigrina
(D) Panthera leo

31. Which animal is known for regeneration?
(A) Frog
(B) Hydra
(C) Crocodile
(D) Whale

32. Which of the following animals has book lungs?
(A) Earthworm
(B) Spider
(C) Fish
(D) Snake

33. Which mammal can fly?
(A) Bat
(B) Whale
(C) Rat
(D) Kangaroo

34. Which of the following animals has radial symmetry?
(A) Hydra
(B) Earthworm
(C) Spider
(D) Snake

35. Which part of a mollusk is used for locomotion?
(A) Foot
(B) Tentacles
(C) Arms
(D) Tail

36. Which of the following is the largest reptile?
(A) Snake
(B) Crocodile
(C) Turtle
(D) Lizard

37. Which of the following animals is triploblastic?
(A) Hydra
(B) Planaria
(C) Sponges
(D) Corals

38. Which organ is used for respiration in fish?
(A) Lungs
(B) Gills
(C) Skin
(D) Spiracles

39. Which of the following organisms is an example of protozoa?
(A) Amoeba
(B) Hydra
(C) Earthworm
(D) Snail

40. Which of the following is a hermaphrodite?
(A) Earthworm
(B) Frog
(C) Hen
(D) Fish

41. Which blood cells in mammals lack a nucleus?
(A) WBCs
(B) Platelets
(C) RBCs
(D) Lymphocytes

42. Which vitamin is synthesized by bacteria in the human intestine?
(A) Vitamin A
(B) Vitamin B12
(C) Vitamin C
(D) Vitamin D

43. Which of the following is a cartilaginous fish?
(A) Shark
(B) Rohu
(C) Salmon
(D) Tuna

44. Which animal is known as the “Ship of the Desert”?
(A) Horse
(B) Camel
(C) Donkey
(D) Elephant

45. Which of the following is a monotreme?
(A) Kangaroo
(B) Platypus
(C) Rabbit
(D) Dog

46. Which of the following animals has a four-chambered heart?
(A) Lizard
(B) Crocodile
(C) Frog
(D) Turtle

47. The body cavity of annelids is known as:
(A) Coelom
(B) Pseudocoelom
(C) Hemocoel
(D) Acoelom

48. The scientific name of the lion is:
(A) Panthera leo
(B) Panthera tigris
(C) Felis catus
(D) Canis lupus

49. Which of the following has bilateral symmetry?
(A) Earthworm
(B) Hydra
(C) Starfish
(D) Coral

50. Which animal has the longest gestation period?
(A) Giraffe
(B) Elephant
(C) Whale
(D) Tiger