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Q: The mouth of Mollusca contains a file-like rasping organ for feeding which is called ––––.
  • A. chitinous
  • B. radula
  • C. paraodia
  • D. coelomate
Correct Answer: Option B - The radula is a file like rasping organ used by the molluscs for feeding, sometimes compared to a tongue, it is a minutely toothed, chitinous ribbon, which is typically used for scraping or cutting food before the food enters the oesophagus.
B. The radula is a file like rasping organ used by the molluscs for feeding, sometimes compared to a tongue, it is a minutely toothed, chitinous ribbon, which is typically used for scraping or cutting food before the food enters the oesophagus.

Explanations:

The radula is a file like rasping organ used by the molluscs for feeding, sometimes compared to a tongue, it is a minutely toothed, chitinous ribbon, which is typically used for scraping or cutting food before the food enters the oesophagus.