NEET UG - Major groups of animals-nonchordates up to phyla level chordates up to classes level - salient features and examples Online Test (MCQ Quiz)

1. Which phylum is characterized by the presence of a true coelom and metameric segmentation?

A) Platyhelminthes B) Annelida C) Nematoda D) Arthropoda

2. Which of the following is a characteristic feature of Porifera?

A) Presence of a water vascular system B) Radial symmetry C) Presence of choanocytes (collar cells) D) Bilateral symmetry

3. The phylum Cnidaria is distinguished by the presence of which type of cells?

A) Flame cells B) Nematocysts C) Choanocytes D) Suckers

4. Which class of Mollusca includes snails and slugs?

A) Pelecypoda B) Cephalopoda C) Gastropoda D) Scaphopoda

5. Which of the following is NOT a characteristic feature of Echinodermata?

A) Water vascular system B) Radial symmetry in adults C) Presence of a notochord D) Triploblastic coelomate

6. The body of which phylum is unsegmented, cylindrical, and pseudocoelomate?

A) Annelida B) Platyhelminthes C) Nematoda D) Arthropoda

7. Which phylum exhibits the highest level of organization with a true coelom and jointed appendages?

A) Mollusca B) Arthropoda C) Annelida D) Echinodermata

8. Which of the following animals belongs to the phylum Platyhelminthes?

A) Ascaris B) Taenia solium (pork tapeworm) C) Hirudinaria (leeches) D) Pila (apple snail)

9. The presence of a mantle, visceral hump, and foot are characteristic features of which phylum?

A) Annelida B) Mollusca C) Arthropoda D) Cnidaria

10. Which class within Chordata is characterized by the presence of a cartilaginous skeleton and paired fins?

A) Osteichthyes B) Chondrichthyes C) Agnatha D) Amphibia

11. Which of the following is a key characteristic of the phylum Chordata?

A) Presence of a water vascular system B) External fertilization only C) Presence of a notochord at some stage D) Radial symmetry

12. Which class of Chordates are known as 'jawless fish'?

A) Chondrichthyes B) Osteichthyes C) Agnatha D) Reptilia

13. Amphibians are characterized by their ability to live in both aquatic and terrestrial environments. Which of the following is NOT typical of amphibians?

A) Three-chambered heart B) Ectothermic (cold-blooded) C) Internal fertilization D) Respiration through gills, lungs, and skin

14. Which class of Chordates are characterized by scales, lungs, and typically oviparous reproduction (with few viviparous exceptions)?

A) Aves B) Mammalia C) Amphibia D) Reptilia

15. Birds (Aves) are distinguished by which of the following features?

A) Presence of mammary glands B) Forelimbs modified into wings C) Viviparous reproduction D) Absence of feathers

16. Which class of Chordates is characterized by the presence of mammary glands and hair/fur?

A) Reptilia B) Aves C) Mammalia D) Amphibia

17. The phylum Arthropoda is the largest phylum. Which of the following is NOT a characteristic feature of Arthropods?

A) Chitinous exoskeleton B) Segmented body C) Open circulatory system D) Closed circulatory system

18. Which of the following is an example of an animal belonging to the class Gastropoda?

A) Oyster B) Squid C) Snail D) Octopus

19. The phylum Annelida includes segmented worms. Which of these is an example of an annelid?

A) Earthworm B) Roundworm C) Tapeworm D) Flatworm

20. Which phylum is known for its radial symmetry and the presence of a gastrovascular cavity?

A) Porifera B) Cnidaria C) Platyhelminthes D) Nematoda

21. Which of the following is a characteristic of the class Osteichthyes?

A) Cartilaginous skeleton B) Four pairs of gills covered by an operculum C) Lack of a swim bladder D) Lack of scales

22. The class Cephalopoda within Mollusca is characterized by:

A) A shell reduced or absent, and tentacles around the mouth B) A flattened shell and burrowing habit C) A large, coiled shell and a single foot D) Two hinged shells and a laterally compressed body

23. Which phylum has animals with a unique water vascular system used for locomotion, feeding, and respiration?

A) Arthropoda B) Mollusca C) Echinodermata D) Annelida

24. Which phylum is characterized by a soft body, often enclosed in a calcareous shell, and a muscular foot?

A) Annelida B) Arthropoda C) Mollusca D) Nematoda

25. Which of the following animals is a cnidarian?

A) Starfish B) Jellyfish C) Earthworm D) Sponge

26. The phylum Platyhelminthes are commonly known as:

A) Roundworms B) Segmented worms C) Flatworms D) Sponges

27. Which class of Chordates exhibits the characteristic of having feathers?

A) Mammalia B) Reptilia C) Aves D) Amphibia

28. The presence of a vertebral column is a defining characteristic of which subphylum within Chordata?

A) Urochordata B) Cephalochordata C) Vertebrata D) Tunicata

29. Which class of fish is characterized by a bony skeleton and a single gill opening covered by an operculum?

A) Chondrichthyes B) Agnatha C) Osteichthyes D) Cyclostomata

30. Which of the following is a characteristic feature of mammals?

A) Lungs only for respiration B) Viviparous birth (mostly) C) External fertilization D) No hair or fur

31. The phylum Porifera includes organisms commonly known as:

A) Corals B) Jellyfish C) Sponges D) Sea anemones

32. Which phylum has the largest number of species and exhibits bilateral symmetry and a segmented body?

A) Mollusca B) Annelida C) Arthropoda D) Echinodermata

33. The class Amphibia typically undergoes metamorphosis. Which stage is characterized by aquatic respiration using gills?

A) Adult stage B) Larval stage (tadpole) C) Egg stage D) Hibernation stage

34. Which class of Chordates are known for their dry, scaly skin and being primarily terrestrial?

A) Amphibia B) Reptilia C) Aves D) Mammalia

35. Which of the following is a marine invertebrate belonging to the phylum Mollusca, known for its jet propulsion?

A) Snail B) Clam C) Octopus D) Slug

36. The phylum Nematoda is characterized by:

A) A segmented body and a true coelom B) A soft body and a mantle C) A cylindrical, unsegmented body and a pseudocoelom D) Bilateral symmetry and a gastrovascular cavity

37. Which of the following features is unique to the phylum Chordata?

A) Exoskeleton B) Metameric segmentation C) Notochord D) Water vascular system

38. Which class of Chordates are known as 'cartilaginous fishes'?

A) Osteichthyes B) Agnatha C) Chondrichthyes D) Amphibia

39. Which phylum exhibits alternation of generations in its life cycle, with distinct polyp and medusa forms?

A) Porifera B) Platyhelminthes C) Cnidaria D) Nematoda

40. Which class of Mollusca includes bivalves like oysters and mussels?

A) Gastropoda B) Cephalopoda C) Pelecypoda D) Scaphopoda

41. The subphylum Vertebrata is characterized by the presence of:

A) A chitinous exoskeleton B) A vertebral column C) A water vascular system D) A mantle

42. Which of the following is an example of a chordate belonging to the class Agnatha?

A) Shark B) Salmon C) Lamprey D) Frog

43. The phylum Arthropoda has three main body parts: head, thorax, and abdomen. Which class includes insects?

A) Arachnida B) Crustacea C) Insecta D) Myriapoda

44. Which class of Chordates are known for their ability to fly, due to forelimbs modified into wings covered with feathers?

A) Reptilia B) Mammalia C) Amphibia D) Aves

45. Which of the following is a characteristic of the class Reptilia?

A) Moist skin and external fertilization B) Four-chambered heart (mostly) and lungs C) Viviparous reproduction and mammary glands D) Cold-blooded and aquatic respiration

46. Which phylum includes sessile, porous animals that filter feed using choanocytes?

A) Cnidaria B) Porifera C) Echinodermata D) Mollusca

47. Which phylum is characterized by a cylindrical body, complete digestive system, and shedding of cuticle?

A) Platyhelminthes B) Annelida C) Nematoda D) Arthropoda

48. Which of the following is NOT a characteristic of the phylum Chordata?

A) Pharyngeal gill slits B) Dorsal hollow nerve cord C) Post-anal tail D) Radial symmetry

49. Which class within Chordata is characterized by the presence of mammary glands and is endothermic?

A) Reptilia B) Aves C) Mammalia D) Amphibia

50. Which of the following is an example of an animal from the class Cephalopoda?

A) Oyster B) Snail C) Squid D) Mussel

Major groups of animals-nonchordates up to phyla level chordates up to classes level - salient features and examples - Online Test

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