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Biology · Oct / Nov 2020 · Paper 12 · Question 9

5090Absorption and assimilation

What is the main function of the villi in the ileum?

  1. Ato increase the surface area for absorption
  2. Bto move digested food along the intestine by peristalsis
  3. Cto produce mucus so that materials can move smoothly
  4. Dto secrete amylase to digest starch in the food

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Correct answer: A. to increase the surface area for absorption

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