NEET Zoology Non-Chordates MCQ Question
Consider a diagram showing a simplified cross-sectional view of an animal body. The diagram indicates three layers: an outer ectoderm, a middle mesoderm, and an inner endoderm. The mesoderm forms a complete lining around a central cavity. Which of the following terms best describes this type of body cavity?
Coelom
Pseudocoelom
Acoelom
Gastrovascular cavity
Correct Answer
Detailed Explanation
The coelom is a body cavity fully lined by mesoderm, as seen in coelomates such as annelids, molluscs, and chordates. This differs from pseudocoeloms, which are not fully lined by mesoderm, and acoeloms, which lack a body cavity.
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