Plant Growth Regulators

IMPORTANT

Plant Growth Regulators: Overview

The topic discusses the plant growth regulators as the small, simple molecules of diverse chemical composition. It also describes the physiological effects of plant growth regulators.

Important Questions on Plant Growth Regulators

MEDIUM
IMPORTANT

How many of the following are phytohormones?
ABA,C2H4,IAA,GA3,ABA

EASY
IMPORTANT

The appearance and fall of fruits occur due to

MEDIUM
IMPORTANT

Which of the following phytohormone helps in fruit ripening

MEDIUM
IMPORTANT

Which plant hormone causes apical dominance?

EASY
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Which of the following plant hormones causes wilting of leaves?

EASY
IMPORTANT

Which plant hormone causes bending of shoot towards light?

EASY
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Which of the following is a plant hormone?

EASY
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Cell division in plants is promoted by:

MEDIUM
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A plant hormone which inhibits plant growth is -

MEDIUM
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Which of the following plant hormone inhibits plant growth-

EASY
IMPORTANT

Which of the following is a plant hormone?

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Which hormone is liberated by nodule forming bacteria?

EASY
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What is vernalization?

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Ethylene is a

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Which of the following hormones can replace vernalization?

EASY
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Match the following

  List I   List II
A. Auxin i. Herring sperm DNA
B. Cytokinin ii. Inhibitor of growth
C. Gibberellin iii. Apical dominance
D. Ethylene iv. Epinasty
E. Abscisic acid v. Induces amylase synthesis

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Storage sprouting of potato can be prevented by

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Which of the following enhances or induces fusion of protoplasts

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Phytohormones are

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IMPORTANT

One hormone helps in ripening of fruits while the other stimulates closure of stomata. These are respectively