Question

Match the following characteristics with their respective animal Phyla.

• A. (i) – (c), (ii) – (d), (iii) – (b), (iv) – (a)
• B. (i) – (d), (ii) – (b), (iii) – (a), (iv) – (c)
• C. (i) – (a), (ii) – (c), (iii) – (d), (iv) – (b)
• D. (i) – (a), (ii) – (b), (iii) – (c), (iv) – (d)

Hint:

A pseudocoelom is a body cavity that is not completely lined with mesoderm, found in Nemathelminthes. Metamerism refers to body segmentation, a feature of Annelida.

Answer 1

The Correct Option is A

Step 1: Identify the characteristic of each phylum.
% Option (i) Pseudocoelom – Nemathelminthes (roundworms) possess a pseudocoelom.
% Option (ii) Complete metamerism – Annelida (earthworms, leeches) exhibit complete metamerism, where the body is divided into segments.
% Option (iii) Torsion – Mollusca (snails) exhibit torsion, a process where the body twists during development.
% Option (iv) Marine animals with tube feet – Echinodermata (starfish) have tube feet that help them move and feed.

Step 2: Match the characteristics with the correct phyla.
The correct matching is:
% Option (i) Pseudocoelom – Nemathelminthes
% Option (ii) Complete metamerism – Annelida
% Option (iii) Torsion – Mollusca
% Option (iv) Marine animals with tube feet – Echinodermata
Thus, the correct option is (1).