Question 41 - Solutions - CBSE Class 10 Sample Paper for 2022 Boards - Science [MCQ] - Solutions to CBSE Sample Paper - Science Class 10

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

(A) mushroom, green plants, amoeba 

(B) yeast, mushroom, bread mould 

(C) paramecium, amoeba, cuscuta 

(D) cuscuta, lice, tapeworm 

Answer - 

There are 3 types of heterotrophic nutrition by organisms:

1. Saprotrophic Nutrition : In this, organisms break down food outside their body
   Example - Fungi, Bread moulds, yeast
   
   
2. Parasitic Nutrition : In this, organisms derive food from the body of another living organism without killing it . Example - Cuscuta, Tapeworm
   
   
3. Holozoic Nutrition : In this, organisms break down food inside their body. Example - Human Beings, Animals

Now, let’s check our option:

• Option A - Mushrooms have saprotrophic nutrition, Green plants are autotrophs , and amoeba follows holozoic nutrition.
  Thus, Option A is incorrect .
  
  
• Option B - Yeast, Mushrooms and Bread mold have saprotrophic nutrition.
  Thus, Option B is correct
  
  
• Option C - Paramecium and Amoeba have holozoic nutrition, Cuscuta have parasitic nutrition
  Thus, Option C is incorrect .
  
  
• Option D - Cuscuta, Lice and Tapeworm have parasitic nutrition
  Thus, Option D is incorrect .

So, the correct answer is (b)