NEET Biology question
Identify the phylum from the statements given below.
(i) Their body is circular in cross-section. (ii) They may be free living, aquatic and terrestrial or parasitic in plants and animals. (iii) They are bilaterally symmetrical, triploblastic and pseudocoelomate.
Answer: (B)
Solution
A circular (rounded) cross-section, free-living or parasitic habits in plants and animals, and a bilaterally symmetrical, triploblastic, pseudocoelomate body plan are all diagnostic of phylum Aschelminthes (roundworms/nematodes). Cnidaria is diploblastic
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