1. Which of the following is not a characteristic of the phylum Arthropoda?
- Metameric segmentation
- Jointed appendages
- Chitinous exoskeleton
- Parapodia
Answer: Parapodia
2. Cnidarians, which exhibit only polyp stage
- Cubozoa
- Scyphozoa
- Anthozoa
- Hydrozoa
Answer: Anthozoa
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3. Flagellated cells, that lines the spongocoel in Poriferans are referred to as
- Ostia
- Mesenchymal cells
- Oscula
- Choanocytes
Answer: Choanocytes
4. Which among the following possess notochord in the embryonic stage?
- Non-chordates
- Vertebrates
- Some of the chordates
- All chordates
Answer: All chordates
5. Which of the following structures helps in the excretion of flatworms.
- Protonephridia
- Green glands
- Flame cells
- Malpighian tubules
Answer: Flame cells
6. Periplaneta belongs to which phylum?
- Arthropoda
- Mollusca
- Annelida
- Echinodermata
Answer: Arthropoda
7. Which of the following helps in the development of canal system in sponges
- Porous walls
- Folding of inner walls
- Gastrovascular system
- Reproduction
Answer: Folding of inner walls
8. This is an example of bilaterally symmetrical and triploblastic animal
- cnidarians
- sponges
- ctenophores
- round worms
Answer: round worms
9. The group of molluscs, which possess eyes similar to vertebrates
- bivalvia
- gastropoda
- cephalopoda
- pelecypoda
Answer: cephalopoda
10. An important characteristic feature, which is present only in the phylum Coelenterata is
- Flame cells
- Nematocysts
- Hermaphroditism
- Polymorphism
Answer: Nematocysts
11. Tube feet are found in
- Starfish
- Cuttlefish
- Crayfish
- Jellyfish
Answer: Starfish
12. Radial symmetry is found in which of the following
- Coelenterata and Platyhelminthes
- Arthropoda and Mollusca
- Coelenterata and Echinodermata
- Porifera and Coelenterata
Answer: Coelenterata and Echinodermata
13. Flagellated cells, which line the spongocoel in Poriferans are known as
- ostia
- mesenchymal cells
- choanocytes
- oscula
Answer: choanocytes
14. Tube feet are found in
- cuttlefish
- crayfish
- jellyfish
- starfish
Answer: starfish
15. Cnidarians, which possess only polyp stage
- Cubozoa
- Scyphozoa
- Hydrozoa
- Anthozoa
Answer: anthozoa
16. Phylum Annelida is not characterized by
- segmentation
- closed circulatory system
- ventral nerve chord
- pseudocoelom
Answer: pseudocoelom
17. Excretion is performed by _______ in flatworms.
- protonephridia
- flame cells
- green glands
- malpighian tubules
Answer: flame cells
18. The group of molluscs, that exhibit eyes similar to vertebrates
- Bivalvia
- Cephalopoda
- Gastropoda
- Pelecypoda
Answer: Cephalopoda
19. Which of the following contains notochord in the embryonic stage?
- Non-chordates
- Vertebrates
- All chordates
- Some of the chordates
Answer: All chordates
20. Which among the following accurately defines “Mother-of-pearl”?
- An oyster which yields the pearl
- A special large sized pearl found in Japan
- Female individual of certain species of shelled mollusc
- 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
- nematocysts
- flame cells
- hermaphroditism
- polymorphism
Answer: nematocysts
22. Phylum Annelida is not characterized by which of the following
- Segmentation
- Closed circulatory system
- Pseudocoelom
- Ventral nerve cord
Answer: Pseudocoelom
23. Which of the following is an example of bilaterally symmetrical and triploblastic animal
- Cnidarians
- Roundworms
- Sponges
- Ctenophores
Answer: Sponges
24. Which among the following is not a characteristic of the phylum Arthropoda?
- Parapodia
- Metameric segmentation
- Jointed appendages
- Chitinous exoskeleton
Answer: Parapodia
25. Which among the following is not a characteristic of the phylum Arthropoda?
- Parapodia
- Metameric segmentation
- Jointed appendages
- Chitinous exoskeleton
Answer: Parapodia
