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Name the type of nutrition… (Class 10 Science 2024, Q23b)

questionbuddy.in/q/cbse-10-science-2024-31-4-1-q23b-name-type-nutrition-exhibited-amoeba

ScienceCBSE Class 10 · Board exam 2024, set 31/4/1 · 2 marks · Very short answer

CBSE Class 10 Science 2024: question 23(b)

Set in the CBSE Class 10 board exam of 2024, paper 31/4/1, section B, question 23(b), for 2 marks. Try it first; the hints and our step-by-step solution are below.

Q23(b) · 2 marks · Very short answerLife Processes

Name the type of nutrition exhibited by Amoeba. Explain how food is taken in and digested by this organism.

Source: official question paper from cbse.gov.in (PDF). See it in the full 2024 board paper, set 31/4/1.

Hints

Open one hint at a time and try again before the next.

Hint 1

Amoeba engulfs whole food particles.

Hint 2

Recall the temporary projections of Amoeba and what they form around the food.

Step-by-step solution

Each step shows the marks it earns, as an examiner would award them. Checked by an independent re-solve from the question paper.

  1. Amoeba shows heterotrophic (holozoic) nutrition.

    1 mark

  2. Amoeba pushes out temporary finger-like projections called pseudopodia. These surround the food particle and fuse over it to form a food vacuole. Inside the food vacuole, complex food is broken down into simpler substances, which diffuse into the cytoplasm. The undigested material is thrown out through the cell surface.

    1 mark

Answer: Holozoic (heterotrophic) nutrition. Food is engulfed by pseudopodia into a food vacuole, where it is digested into simpler substances.

Where the marks are

  • Names heterotrophic/holozoic nutrition (1 mark)
  • Describes engulfing by pseudopodia, food vacuole formation and digestion inside it (1 mark)

Revise the chapter

  • Chapter: Life Processes (notes, formulas, where marks are lost and every past question)
Practise this chapterBoard-style questions from Life Processes, one at a time, marked against the answer key and marking points.Back to the full paper2024 board paper, set 31/4/1: every question, by section.

The question is transcribed from the official paper; figures are described in words. The solution, hints and chapter tag are ours. Spotted an error? Write tosupport@questionbuddy.in.