Question 191 markMCQSection Section A

Assertion (A) : Amoeba takes in food using finger like extensions of the cell surface.

Reason (R) : In all unicellular organisms, the food is taken in by the entire cell surface.

Life Processes
Nutrition

Options

(a)Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of (A).
(b)Both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of (A).
(c)Assertion (A) is true, but Reason (R) is false.
(d)Assertion (A) is false, but Reason (R) is true.

Official answer

Amoeba takes in food using temporary finger-like extensions of the cell surface which fuse over the food particle forming a food-vacuole. However, not all unicellular organisms take in food by the entire cell surface. For example, Paramoecium takes in food at a specific spot.

Answer keywords:Amoebanutritionunicellular organisms

Marking scheme

  1. 1.None

Hint

Recall the mode of nutrition in Amoeba and other unicellular organisms.

Quick oral answer

Amoeba takes in food using temporary finger-like extensions of the cell surface which fuse over the food particle forming a food-vacuole.

Common mistakes

  1. 1.Confusing the mode of nutrition in different unicellular organisms.

Analysis and explanation

The assertion is true as Amoeba takes in food using temporary finger-like extensions of the cell surface. However, the reason is false as not all unicellular organisms take in food by the entire cell surface.

Interesting facts

Amoeba is a unicellular organism that belongs to the kingdom Protista.

Question details

Q19 of 39 questions

Board
CBSE
Class
Class 10
Subject
Science
Year
2023
Section
Section Section A
Marks
1
Type
MCQ
Chapter
Life Processes
Topic
Nutrition
Bloom's level
Remembering
Syllabus topic
Nutrition in Human Beings

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Frequently asked questions

How many marks does this question carry in CBSE Class 10 Science 2023?

This question carries 1 mark in the CBSE Class 10 Science 2023 examination.

Which chapter does this question come from in Science?

This question is from the chapter "Life Processes" in the CBSE Class 10 Science syllabus.

What topic does this question cover in Science?

This question covers the topic "Nutrition" from CBSE Class 10 Science.

What type of question is this in the CBSE Class 10 Science 2023 paper?

This is a MCQ question from Section Section A in the CBSE Class 10 Science 2023 paper.