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Structural Organisation in Animals question

2025 · Q61
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Structural Organisation in Animals question

2025 · Q61

NEETBiologyStructural Organisation in AnimalsMCQ+4 / −1

While trying to find out the characteristic of a newly found animal, a researcher did the histology of adult animal and observed a cavity with presence of mesodermal tissue towards the body wall but no mesodermal tissue was observed towards the alimentary canal. What could be the possible coelome of that animal?

  1. A
    Schizocoelomate
  2. B
    Spongocoelomate
  3. C
    Acoelomate
  4. D
    Pseudocoelomate
View written solutionFree

Correct answer: D

In pseudocoelomates, the body cavity features mesodermal tissue along the body wall, but it is not fully lined with mesoderm, as there is no mesodermal tissue present towards the alimentary canal.

Schizocoelomates: These animals have a body cavity, or coelom, which develops from a split within the mesoderm, the middle germ layer during embryonic development.

Acoelomates: Animals in this category lack a coelom entirely; they do not have a body cavity between their gut and body wall.

Spongocoel: This term refers to the central cavity characteristic of sponges, which are sessile aquatic animals.

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