What is specially common between the alveoli of lungs and villi of intestine, in mammals?

Biology · NEET · NTA ExamsDigestion and Absorption

What is specially common between the alveoli of lungs and villi of intestine, in mammals?
  1. Both have ciliated epithelium
  2. Both have rich blood vessels and lymphatics
  3. Both are suited for diffusion of gases
  4. Both provide large surface area for absorption

Answer

(D) Both provide large surface area for absorption

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