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

Class 10
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

Types of Heterotrophic Nutrition-01.jpg

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)

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CA Maninder Singh is a Chartered Accountant for the past 13 years and a teacher from the past 17 years. He teaches Science, Economics, Accounting and English at Teachoo