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Assertion (A): Auxin is a growth-retarding plant hormone. Reason (R): Auxins are mainly synthesized in shoot apical meristems and young leaves.

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Question

Assertion (A): Auxin is a growth-retarding plant hormone.

Reason (R): Auxins are mainly synthesized in shoot apical meristems and young leaves.

Options

  • A is True and R is False.

  • A is False and R is True.

  • Both A and R are True.

  • Both A and R are False.

MCQ
Assertion and Reasoning
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Solution

A is False and R is True.

Explanation:

The assertion is false: auxin is a powerful growth stimulant that promotes cell elongation. The reason is true; auxins are synthesized mainly in shoot apical meristems and young leaves.

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Chapter 7: Chemical Coordination in Plants - Review Questions [Page 98]

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Selina Concise Biology [English] Class 10 ICSE
Chapter 7 Chemical Coordination in Plants
Review Questions | Q A. 14. | Page 98
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