Absorption by Roots – The Processes Involved

Appeared in 10 of the 11 available papers.

Examined in

10 of 11 papers

Appears almost every year — treat as core

Typically worth

4.3 marks

Average per paper it appears in · 43 marks in total

Usual form

MCQ

22% of this chapter's 37 questions

Needs a diagram

30%

11 questions carry a figure — practise drawing them

Question-type distribution

MCQ8
Short answer8
Differentiate4
Diagram4
Biological term4
Definition4
Sequencing2
Reasoning2

Most frequent topics

Deplasmolysis 2Path of water into the root 2Active transport 2Root pressure 2Diffusion 2Osmosis 2Osmosis — salt as a preservative 1Plasmolysis and deplasmolysis 1

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Print chapter question bank

Showing 12 of 37 matching questions (43 marks).

12 questions

1(b)

Choose the correct answer from each of the four options given below:

1(b)(iii)2017

MCQHard1 mark

Marine fish when placed in tap water bursts because of:

(a)Endosmosis
(b)Exosmosis
(c)Diffusion
(d)Plasmolysis

2(b)

Differentiate between the following pairs on the basis of what is mentioned in brackets:

2(b)(i)2017

DifferentiateHard1 mark

Active Transport and Diffusion [significance in plants]

3(a)

The diagram given below represents a plant cell after being placed in a strong sugar solution. Study the diagram and answer the questions that follow:

3(a)(i)2017

Short answerModerate1 mark

What is the state of the cell shown in the diagram?

3(a)(ii)2017

Short answerHard1 mark

Name the structure that acts as a selectively permeable membrane.

3(a)(iii)2017

Short answerHard1 mark

Label the parts numbered 1 to 4 in the diagram.

3(a)(iv)2017

Short answerModerate1 mark

How can the above cell be brought back to its original condition? Mention the scientific term for the recovery of the cell.

1(b)

Choose the correct answer from each of the four options given below:

1(b)(i)2016

MCQHard1 mark

A plant cell may burst when:

(a)Turgor pressure equalises wall pressure
(b)Turgor pressure exceeds wall pressure
(c)Wall pressure exceeds turgor pressure
(d)None of the above

2(a)

The figure given below is a diagrammatic representation of a part of the cross section of the root in the root hair zone. Study the same and then answer the questions that follow: