Consider the following statements regarding growth in plants -
I. Cell enlargement requires water.
II. Oxygen helps in releasing metabolic energy for growth activities.
III. Nutrients are required for synthesis of protoplasm and act as source of energy.
Which of the above statements are true?
1. I and II only           2. I and III only
3. II and III only        4. I, II, and III

Subtopic:  Growth |
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With respect to photoperiodism, the short day plant, the long day plant and day neutral plant are represented respectively by:

1. A, B and C
2. B, A and C
3. C, B and A
4. A, C and B

Subtopic:  Photoperiodism |
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Plant Growth Regulators (PGRs) are not

1. Very less in number in plants

2. Small and simple molecules

3. Diverse chemical composition

4. Plant hormones or phytohormones

Subtopic:  Growth Hormones & Auxin |
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N6- furfurylamino purine and kinetin are derivative of …….

1.Indol compounds

2.Adenine

3.carotenoids

4.Terpenes

Subtopic:  Cytokinin |
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C2H4 or Ethylene are …...or derivative of….

1.Indol compounds

2.Gases

3.carotenoids

4.Terpenes

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

1.Function

2.Structure

3.Metabolism

4.Kinetin

Subtopic:  Growth Hormones & Auxin |
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Plant growth promotors are not involved in

1.Cell division, cell enlargement

2.Pattern formation, seed formation

3.Dormancy, Abscission

4.Fruiting and Flowering

Subtopic:  Abscisic Acid | Seed Dormancy |
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Which of the following hormones is common in both the categories of plant promotor and plant inhibitor?

1.GA

2.ABA

3.Auxin

4.Ethylene

Subtopic:  Ethylene |
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Which of the following is wrong?

1.ABA is Growth inhibiting regulator

2.Ethylene could fit either of the groups, inhibitors and activators.

3.Auxins, GA and Cytokinins are plant promoters

4.Ethylene is largely a promotor of growth activities

Subtopic:  Ethylene |
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The Discovery of PGRs

1.Four discovery were accidental one was with a planned experiment

2.Three discovery were accidental Two were with a planned experiment

3.Two discovery were accidental Three were with a planned experiment

4..All five we're accidental

Subtopic:  Growth Hormones & Auxin |
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