For tea plantations, hedge-making, which of the following PGR is used?

1.Auxins

2.Cytokinins

3.GA3

4.ABA

Subtopic:  Growth Hormones & Auxin | Auxin Function |
 81%
From NCERT
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Which of the following statements is correct?

1. All GAs are basic

2. All GAs are Acidic

3. Most of the GAs are Acidic

4. Most of the GAs are basic

Subtopic:  Gibberellin |
 82%
From NCERT
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Early seed production in…….. can be done by GAs

1.Pineapple

2.Grapes

3.Tomatoes

4.Conifers

Subtopic:  Gibberellin |
 65%
From NCERT
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For the induction of flowering, some plants require a

(1) Periodic exposure to light

(2) Continuous exposure to light

(3) No exposure to light

(4) No exposure to night

 82%
From NCERT
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If a plant needs exposure of light more than a well defined critical period for flowering, it would be called as-

(1) Long day plants

(2) Short day plants

(3) Day neutral plants

(4) Red light plants

 95%
From NCERT
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If a plant needs exposure of light less than a defined period for flowering, such plant is called

1. Long day plants

2. Short day plants

3. Day neutral plants

4. Far red light plants

 95%
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When there is no such relation between exposure to light duration and induction of flowering response such plants are called

(1) Long day plants

(2) Short day plants

(3) Day neutral plants

(4) Far red light plants

 95%
From NCERT
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Flowering can be affected in certain plants

(1) by quantitative exposure to low temperature

(2) by qualitative exposure to low temperature

(3) Both A and B

(4) It does not depend on low temperature exposure

 85%
From NCERT
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Vernalisation prevents

(1) Precocious reproductive development late in growing season

(2) Late reproductive development

(3) Flowering

(4) Fruiting

 75%
From NCERT
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Which of the following does not has two kinds of varieties?

(1) Wheat

(2) Radish

(3) Barley

(4) Rye

 69%
From NCERT
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