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Important Questions

Chemical Coordination in Plants

ICSE · Class 10 · Biology

Most important questions from Chemical Coordination in Plants for ICSE Class 10 Biology board exam 2026. MCQs, short answer, and long answer questions with marks.

45 questions20 flashcards5 concepts

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An infographic classifying plant growth regulators into promoters (Auxins, Gibberellins, Cytokinins) and inhibitors (Abscisic Acid, Ethylene), with their general functions.
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45 Questions·
multiple choicemultiple correct

Sample Questions

1multiple correct

Which of the following are growth promoting hormones in plants?

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Auxin, Gibberellin, Cytokinin

Auxin, Gibberellin, and Cytokinin are growth promoting hormones. Ethylene and Abscisic acid are growth inhibiting hormones.

2multiple choice

Which hormone is known as the anti-stress hormone in plants?

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Abscisic acid

Abscisic acid (ABA) is called the anti-stress hormone because it induces closure of stomata during water stress, protecting plants from desiccation.

3multiple correct

Which of the following functions are performed by cytokinin?

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Promotes cell division, Delays senescence, Opposes apical dominance

Cytokinin promotes cell division, delays aging (senescence), and opposes apical dominance. Fruit ripening is caused by ethylene, and stomatal closure by ABA.

4multiple choice

IAA stands for:

Show answer

Indole Acetic Acid

IAA stands for Indole Acetic Acid, which is the most abundant and powerful naturally occurring auxin in plants.

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Frequently Asked Questions

What are the important topics in Chemical Coordination in Plants for ICSE Class 10 Biology?
Key topics in Chemical Coordination in Plants include Auxin Effect: Concentration vs Growth Response in Root and Shoot, Plant Growth Regulators — Complete Overview, Plant Growth Regulators — Complete Classification. These are the concepts ICSE Class 10 examiners draw on most — study them first, then practise related questions.
How to score full marks in Chemical Coordination in Plants — ICSE Class 10 Biology?
Understand the core concepts first, then work through the 45 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.
How many important questions are there in Chemical Coordination in Plants?
There are 45 practice questions available for Chemical Coordination in Plants. These cover multiple question types including MCQs, short answer, and long answer questions.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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