First slide

Classification of Animals

Question

In which one of the following, the genus name and its two characters are correctly matched?

Moderate

A

Taenia - (i) Hooks and suckers
(ii) Pseudocoelom
B

Ctenoplana - (i) Comb plates
(ii) Bioluminescence
C

Ascaris - (i) Pseudocoelom
(ii) Nephridia
D

Nereis - (i) Metamerism
(ii) Monoecious

Solution

Ctenoplana belongs to the phylum Ctenophora. The body of ctenophores bears eight external rows of ciliated comb plates, which help in locomotion. Bioluminescence (the property of a living organism to emit light) is well-marked in ctenophores. Taenia is acoelomate. Ascaris lacks nephridia. Nereis is dioecious.

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