Animal Kingdom Question 348

Question: Pseudocoelom develops from

[CBSE PMT 1994;CPMT 2002]

Options:

A) Blastopore lip

B) Archenteron

C) Embryonic mesoderm

D) Blastocoel

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Answer:

Correct Answer: D

Solution:

Roundworms of the phylum Nematoda are characterised as pseudocoelomates.

Such a coelom is not formed from mesodermal layer and is not layered with mesoderm on both sides.

The coelom in these animals is called persistent blastocoel as it is derived from embryonic blastocoel.

So, the correct answer is ‘Blastocoel’