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  4. Coelom derived from blastocoel is known as

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Q. Coelom derived from blastocoel is known as

AIPMTAIPMT 1994Human Reproduction

Solution:

Roundworms have a body cavity called pseudocoelom consisting of a fluid-filled space between the body wall and digestive tract. Pseudocoelom is derived from the blastocoel of the embryo rather than from a secondary cavity within the embryonic mesoderm (which results in a true body cavity or coelom). The internal organs of pseudocoelomate animals are actually found free within the fluid-filled body cavity as there is no layer of mesodermal epithelium lining the cavity and surrounding the organs.