Question 81 markMCQSection A

$Select from the following a plant hormone which promotes cell division.$

Control and Coordination

Plant Hormones

Options

(A)

Gibberellins

(B)

Auxins

(C)

Abscissic Acid

(D)

Cytokinins

Official answer

D

Cytokinins

cell division

Marking scheme

1. $1 mark for selecting the correct option (D)$

Hint

$Think of the plant hormone whose name is derived from 'cytokinesis', which means cell division.$

Common mistakes

1. $Students often confuse Auxins with Cytokinins. Auxins promote cell elongation, whereas Cytokinins specifically promote cell division.$

Analysis and explanation

Cytokinins are plant hormones that naturally promote cell division, particularly in areas of rapid cell division such as fruits and seeds. Auxins (Option B) are synthesized at the shoot tips and help the cells grow longer (cell elongation). Gibberellins (Option A), like auxins, help in the growth of the stem. Abscisic Acid (Option C) is a growth inhibitor, which causes effects like the wilting of leaves.

Interesting facts

$The term 'cytokinin' is directly related to 'cytokinesis', the physical process of cell division where a single eukaryotic cell divides into two daughter cells.$

Question details

Q8 of 39 questions

Board: CBSE
Class: Class 10
Subject: Science
Year: 2024
Section: Section A
Marks: 1
Type: MCQ
Chapter: Control and Coordination
Topic: $Plant Hormones$
Bloom's level: Remembering
Syllabus topic: $Coordination in plants; Plant hormones$

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Frequently asked questions

$How many marks does this question carry in CBSE Class 10 Science 2024?$

$This question carries 1 mark in the CBSE Class 10 Science 2024 examination.$

$Which chapter does this question come from in Science?$

$This question is from the chapter "Control and Coordination" in the CBSE Class 10 Science syllabus.$

$What topic does this question cover in Science?$

$This question covers the topic "Plant Hormones" from CBSE Class 10 Science.$

$What type of question is this in the CBSE Class 10 Science 2024 paper?$

$This is a MCQ question from Section A in the CBSE Class 10 Science 2024 paper.$