The body cavity which is lined by mesoderm is called:
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Correct answer: True coelom
A true coelom is a fluid-filled body cavity situated between the body wall and gut wall that is entirely lined by mesoderm-derived peritoneum. Animals possessing this structure—such as Annelids, Molluscs, and Chordates—are called coelomates.
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More Basis of Animal Classification questions
- In some animals, the body cavity is not lined by mesoderm; instead, the mesoderm is present as scattered pouches. This is known as:
- Which of the following phyla is characterized by the absence of a body cavity (acoelomate condition)?
- Metameric segmentation (metamerism) is a characteristic feature of:
- The notochord is derived from which germ layer?
- Animals that do not possess a notochord are called non-chordates. This group includes phyla from:
- In an open circulatory system, the blood is: