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Biology · ANIMAL KINGDOM

हिन्दी

In Phylum Mollusca, what is the specific anatomical structure located inside the mantle cavity that performs both respiratory and excretory functions, and what feeding apparatus is found in the mouth?

  1. Ctenidia in mantle cavity; Statocyst in mouth
  2. Malpighian tubules in mantle cavity; Proboscis in mouth
  3. Book lungs in mantle cavity; Parapodia in mouth
  4. Feather-like gills in mantle cavity; Radula in mouth

Correct answer · Option 4

Feather-like gills in mantle cavity; Radula in mouth

Explanation

Molluscs have a mantle cavity between the visceral hump and mantle containing feather-like gills that carry out respiration and excretion. The mouth contains a file-like rasping organ called radula.
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