Invertebrates Multiple Choice Questions and Answers

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1. Which of the following is not a characteristic of the phylum Arthropoda?
  1. Metameric segmentation
  2. Jointed appendages
  3. Chitinous exoskeleton
  4. Parapodia

Answer: Parapodia

2. Cnidarians, which exhibit only polyp stage
  1. Cubozoa
  2. Scyphozoa
  3. Anthozoa
  4. Hydrozoa

Answer: Anthozoa

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3. Flagellated cells, that lines the spongocoel in Poriferans are referred to as
  1. Ostia
  2. Mesenchymal cells
  3. Oscula
  4. Choanocytes

Answer: Choanocytes

4. Which among the following possess notochord in the embryonic stage?
  1. Non-chordates
  2. Vertebrates
  3. Some of the chordates
  4. All chordates

Answer: All chordates

5. Which of the following structures helps in the excretion of flatworms.
  1. Protonephridia
  2. Green glands
  3. Flame cells
  4. Malpighian tubules

Answer: Flame cells

6. Periplaneta belongs to which phylum?
  1. Arthropoda
  2. Mollusca
  3. Annelida
  4. Echinodermata

Answer: Arthropoda

7. Which of the following helps in the development of canal system in sponges
  1. Porous walls
  2. Folding of inner walls
  3. Gastrovascular system
  4. Reproduction

Answer: Folding of inner walls

8. This is an example of bilaterally symmetrical and triploblastic animal
  1. cnidarians
  2. sponges
  3. ctenophores
  4. round worms

Answer: round worms

9. The group of molluscs, which possess eyes similar to vertebrates
  1. bivalvia
  2. gastropoda
  3. cephalopoda
  4. pelecypoda

Answer: cephalopoda

10. An important characteristic feature, which is present only in the phylum Coelenterata is
  1. Flame cells
  2. Nematocysts
  3. Hermaphroditism
  4. Polymorphism

Answer: Nematocysts

11. Tube feet are found in
  1. Starfish
  2. Cuttlefish
  3. Crayfish
  4. Jellyfish

Answer: Starfish

12. Radial symmetry is found in which of the following
  1. Coelenterata and Platyhelminthes
  2. Arthropoda and Mollusca
  3. Coelenterata and Echinodermata
  4. Porifera and Coelenterata

Answer: Coelenterata and Echinodermata

13. Flagellated cells, which line the spongocoel in Poriferans are known as
  1. ostia
  2. mesenchymal cells
  3. choanocytes
  4. oscula

Answer: choanocytes

14. Tube feet are found in
  1. cuttlefish
  2. crayfish
  3. jellyfish
  4. starfish

Answer: starfish

15. Cnidarians, which possess only polyp stage
  1. Cubozoa
  2. Scyphozoa
  3. Hydrozoa
  4. Anthozoa

Answer: anthozoa

16. Phylum Annelida is not characterized by
  1. segmentation
  2. closed circulatory system
  3. ventral nerve chord
  4. pseudocoelom

Answer: pseudocoelom

17. Excretion is performed by _______ in flatworms.
  1. protonephridia
  2. flame cells
  3. green glands
  4. malpighian tubules

Answer: flame cells

18. The group of molluscs, that exhibit eyes similar to vertebrates
  1. Bivalvia
  2. Cephalopoda
  3. Gastropoda
  4. Pelecypoda

Answer: Cephalopoda

19. Which of the following contains notochord in the embryonic stage?
  1. Non-chordates
  2. Vertebrates
  3. All chordates
  4. Some of the chordates

Answer: All chordates

20. Which among the following accurately defines “Mother-of-pearl”?
  1. An oyster which yields the pearl
  2. A special large sized pearl found in Japan
  3. Female individual of certain species of shelled mollusc
  4. A hard iridescent substance forming the inner layer of certain shell

Answer: A hard iridescent substance forming the inner layer of certain shell

21. A characteristic feature, which is present only in the phylum Coelenterata is
  1. nematocysts
  2. flame cells
  3. hermaphroditism
  4. polymorphism

Answer: nematocysts

22. Phylum Annelida is not characterized by which of the following
  1. Segmentation
  2. Closed circulatory system
  3. Pseudocoelom
  4. Ventral nerve cord

Answer: Pseudocoelom

23. Which of the following is an example of bilaterally symmetrical and triploblastic animal
  1. Cnidarians
  2. Roundworms
  3. Sponges
  4. Ctenophores

Answer: Sponges

24. Which among the following is not a characteristic of the phylum Arthropoda?
  1. Parapodia
  2. Metameric segmentation
  3. Jointed appendages
  4. Chitinous exoskeleton

Answer: Parapodia

25. Which among the following is not a characteristic of the phylum Arthropoda?
  1. Parapodia
  2. Metameric segmentation
  3. Jointed appendages
  4. Chitinous exoskeleton

Answer: Parapodia

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