1. Animal diversity refers to:
(A) Variety of animal species
(B) Only vertebrates
(C) Only mammals
(D) Only aquatic animals
2. Porifera are:
(A) Earthworms
(B) Jellyfish
(C) Sponges
(D) Snails
3. Coelenterates include:
(A) Insects only
(B) Sponges only
(C) Worms only
(D) Jellyfish, Hydra, and Coral
4. Platyhelminthes are:
(A) Segmented worms
(B) Roundworms
(C) Flatworms
(D) Arthropods
5. Nematodes are:
(A) Segmented worms
(B) Flatworms
(C) Roundworms
(D) Mollusks
6. Annelids include:
(A) Earthworms, leeches, polychaetes
(B) Sponges only
(C) Insects
(D) Crustaceans
7. Mollusca includes:
(A) Earthworms
(B) Snails, Clams, Octopus
(C) Sponges
(D) Starfish
8. Arthropods are characterized by:
(A) Soft unsegmented body
(B) Jointed appendages and exoskeleton
(C) Radial symmetry
(D) No segmentation
9. Echinoderms include:
(A) Starfish, Sea urchins, Sea cucumbers
(B) Snails
(C) Earthworms
(D) Sponges
10. Chordates are characterized by:
(A) Notochord, dorsal hollow nerve cord, pharyngeal slits
(B) Radial symmetry
(C) Segmentation only
(D) Exoskeleton only
11. Vertebrates belong to phylum:
(A) Chordata
(B) Arthropoda
(C) Mollusca
(D) Echinodermata
12. Invertebrates are:
(A) Only marine animals
(B) Animals with backbone
(C) Animals without backbone
(D) Only terrestrial animals
13. Hydra exhibits:
(A) Spherical symmetry
(B) Bilateral symmetry
(C) Asymmetry
(D) Radial symmetry
14. Sponges exhibit:
(A) Radial symmetry
(B) Asymmetry
(C) Bilateral symmetry
(D) Spherical symmetry
15. Starfish exhibits:
(A) Asymmetry
(B) Bilateral symmetry
(C) Pentamerous radial symmetry
(D) Spherical symmetry
16. Earthworm belongs to phylum:
(A) Chordata
(B) Mollusca
(C) Arthropoda
(D) Annelida
17. Octopus belongs to class:
(A) Cephalopoda
(B) Gastropoda
(C) Bivalvia
(D) Polychaeta
18. Snails belong to class:
(A) Gastropoda
(B) Cephalopoda
(C) Bivalvia
(D) Polychaeta
19. Crabs belong to class:
(A) Crustacea
(B) Insecta
(C) Arachnida
(D) Myriapoda
20. Spiders belong to class:
(A) Crustacea
(B) Insecta
(C) Arachnida
(D) Myriapoda
21. Centipedes belong to class:
(A) Diplopoda
(B) Chilopoda
(C) Insecta
(D) Arachnida
22. Millipedes belong to class:
(A) Arachnida
(B) Chilopoda
(C) Insecta
(D) Diplopoda
23. Insects have:
(A) No legs
(B) Four pairs of legs
(C) Many legs
(D) Three pairs of legs
24. Fish belong to class:
(A) Amphibia
(B) Pisces
(C) Reptilia
(D) Mammalia
25. Amphibians include:
(A) Birds
(B) Snakes and Lizards
(C) Frogs, Salamanders
(D) Mammals
26. Reptiles include:
(A) Mammals only
(B) Frogs only
(C) Birds only
(D) Snakes, Lizards, Crocodiles, Turtles
27. Birds are:
(A) Fish
(B) Ectothermic
(C) Amphibians
(D) Endothermic with feathers
28. Mammals are:
(A) Amphibians only
(B) Fish only
(C) Endothermic with hair and mammary glands
(D) Reptiles only
29. Sharks have:
(A) Bony skeleton
(B) Cartilaginous skeleton
(C) No skeleton
(D) Exoskeleton
30. Bony fishes have:
(A) No skeleton
(B) Cartilaginous skeleton
(C) Exoskeleton
(D) Ossified skeleton
31. Amphibians undergo:
(A) Metamorphosis
(B) Direct development only
(C) Viviparity
(D) Budding
32. Crocodiles have:
(A) Two-chambered heart
(B) Three-chambered heart
(C) Four-chambered heart
(D) No heart
33. Birds have:
(A) Four-chambered heart
(B) Three-chambered heart
(C) Two-chambered heart
(D) No heart
34. Mammals have:
(A) Three-chambered heart
(B) Four-chambered heart
(C) Two-chambered heart
(D) Five-chambered heart
35. Vertebrates are:
(A) Pseudocoelomate animals
(B) Acoelomate animals
(C) Coelomate animals
(D) Sponges only
36. Vertebrates possess:
(A) Endoskeleton
(B) Exoskeleton
(C) No skeleton
(D) Only cartilage
37. Fish heart is:
(A) Three-chambered
(B) Two-chambered
(C) Four-chambered
(D) Five-chambered
38. Amphibian heart is:
(A) Two-chambered
(B) Three-chambered
(C) Four-chambered
(D) One-chambered
39. Reptile heart is:
(A) Four-chambered
(B) Two-chambered
(C) Three-chambered (except crocodiles)
(D) One-chambered
40. Fertilization in fish and amphibians is usually:
(A) Budding
(B) Internal
(C) External
(D) Parthenogenesis
41. Fertilization in reptiles, birds, and mammals is:
(A) Budding
(B) External
(C) Internal
(D) Parthenogenesis
42. Vertebrates show:
(A) Cephalization
(B) No cephalization
(C) Random nerve distribution
(D) Nerve net only
43. Vertebrates have:
(A) Dorsal hollow nerve cord
(B) Ventral solid nerve cord
(C) Lateral nerve cord
(D) No nerve cord
44. Vertebrates reproduce:
(A) Fragmentation
(B) Asexually
(C) Budding
(D) Sexually
45. Vertebrate respiration occurs mainly through:
(A) Air sacs only
(B) Skin only
(C) Spiracles only
(D) Lungs or gills
46. Vertebrate excretion is through:
(A) Cloaca only
(B) Skin only
(C) Kidneys
(D) Gills only
47. Vertebrate body cavity is:
(A) Acoelom
(B) Pseudocoelom
(C) True coelom
(D) None
48. Vertebrates are important because they:
(A) Form higher trophic levels and maintain ecosystems
(B) Only produce timber
(C) Only eat plants
(D) Only produce fiber
49. Endothermic vertebrates include:
(A) Reptiles only
(B) Birds and mammals
(C) Amphibians only
(D) Fish only
50. Ectothermic vertebrates include:
(A) Mammals only
(B) Birds only
(C) Fish, amphibians, and reptiles
(D) None