Q.

 In which of the following groups of organisms, food material is broken down outside the body and absorbed?

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a

A. Mushroom, green plants, Amoeba

b

B. Yeast, mushroom, bread mould 

c

 C.  Paramecium, Amoeba, Cuscuta

d

D. Cuscuta , lice, tapeworm

answer is B.

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Detailed Solution

  • Yeast, mushroom and bread mould are saprophytes.
  •  They show saprotrophic nutrition.
  • They break down and convert complex organic molecules present in dead and decaying matter into simpler substances outside their body. 
  • These simpler substances are then absorbed by them. 
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 In which of the following groups of organisms, food material is broken down outside the body and absorbed?