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Botany MCQs for NEET — Practice Questions with Answers

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Abscisic Acid and ABA are derivative of…..

A. Indol compounds B. Adenine C. carotenoids D. Terpenes

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Explanation

Page number-247

15.4 Plant Growth Regulators

15.4.1 Characteristics

Plant Growth And Development

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C₂H₄ or Ethylene are …...or derivative of….

A. Indol compounds B. Gases C. carotenoids D. Terpenes

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Explanation

Page number-247

15.4 Plant Growth Regulators

15.4.1 Characteristics

Plant Growth And Development

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Gibberellic acid and GA3 are…..or derivative of…

A. Indol compounds B. Adenine C. carotenoids D. Terpenes

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Explanation

Page number-247

15.4 Plant Growth Regulators

15.4.1 Characteristics

Plant Growth And Development

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In the living plant body, the PGRs can be broadly divided into two groups. This classification is actually based on

A. Function B. Structure C. Metabolism D. Kinetin

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Explanation

Page number-247

15.4 Plant Growth Regulators

15.4.1 Characteristics

Plant Growth And Development

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Plant growth promotors are not involved in

A. Cell division, cell enlargement B. Pattern formation, seed formation C. Dormancy, Abscission D. Fruiting and Flowering

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Explanation

Page number-247

15.4 Plant Growth Regulators

15.4.1 Characteristics

Plant Growth And Development

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Plant growth promotor is not

A. Auxins B. Gibberellins C. Cytokinins D. ABA

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Explanation

Page number-247

15.4 Plant Growth Regulators

15.4.1 Characteristics

Plant Growth And Development

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The PGRs of the other group which play an important role in plant growth inhibiting activities is not

A. Ethylene B. ABA C. GA D. All of these

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Explanation

Page number-247

15.4 Plant Growth Regulators

15.4.1 Characteristics

Plant Growth And Development

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Which of the following hormones is common in both the categories of plant promotor and plant inhibitor?

A. GA B. ABA C. Auxin D. Ethylene

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Explanation

Page number-247

15.4 Plant Growth Regulators

15.4.1 Characteristics

Plant Growth And Development

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Which of the following is wrong?

A. ABA is Growth inhibiting regulator B. Ethylene could fit either of the groups, inhibitors and activators. C. Auxins, GA and Cytokinins are plant promotors D. Ethylene is largely a promotor of growth activities

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Explanation

Page number-247

15.4 Plant Growth Regulators

15.4.1 Characteristics

Plant Growth And Development

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The Discovery of PGRs

A. Four discovery were accidental one was with a planned experiment B. Three discovery were accidental Two were with a planned experiment C. Two discovery were accidental Three were with a planned experiment D. All five we're accidental

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Explanation

Page number-247

15.4 Plant Growth Regulators

15.4.2 The Discovery of Plant Growth Regulators

Plant Growth And Development

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