Cytokinins

1. Helps to produce new leaves

2. Helps to produce chloroplasts in leaves

3. Lateral shoot growth, Adventitious Shoot Formation

4. All of these

Subtopic:  Cytokinin |
 95%
From NCERT
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Cytokinin

Which of the following is not correct?

(1) Help to overcome apical dominance

(2) They promote nutrient mobilisation and helps in the delay of leaf senescence

(3) Lateral Shoot Growth

(4) Formation of Tap root

Subtopic:  Cytokinin |
 82%
From NCERT
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Which of the following hormones is synthesised in large amounts by tissues undergoing senescence and ripening fruits?

(1) Ethylene

(2) ABA

(3) Auxins

(4) GA3

Subtopic:  Ethylene |
 91%
From NCERT
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Influences of Ethylene in plants do not include

(1) Horizontal growth of seedlings

(2) Swelling of the axis

(3) Apical hook formation in dicot seedlings

(4) Lateral shoot growth

Subtopic:  Ethylene |
 78%
From NCERT
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Ethylene does not perform

(1) Promotes senescence and abscission of plant organs especially of leaves and flowers

(2) Highly effective in fruit ripening

(3) Enhances the respiration rate during ripening of the fruits

(4) Overcome the apical dominance

Subtopic:  Ethylene |
 88%
From NCERT
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The rise in respiration rate of fruit is called

(1) Respiratory quotient

(2) Respiratory climactic

(3) Respiratory incision

(4) Respiratory succulence

Subtopic:  Ethylene |
 86%
From NCERT
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Respiratory climactic is due to

(1) Ethylene

(2) ABA

(3) GA

(4) Auxins

Subtopic:  Ethylene |
 94%
From NCERT
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The function which is not performed by Ethylene is

(1) Breaking of seed and bud dormancy

(2) Initiates germination in peanut seeds

(3) Improving the internode length of sugarcane

(4) Promotes rapid internode and petiole elongation in deep water rice plants

Subtopic:  Ethylene |
 80%
From NCERT
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Sprouting of potato, helping the leaves or upper parts of the rice shoot to remain above water, promotes root growth and root hair formation and helping plants to increase their absorption surface. Which of the following hormones is involved in such physiological effects?

(1) Ethylene

(2) ABA

(3) GA

(4) Auxins

Subtopic:  Ethylene |
 87%
From NCERT
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Ethylene is not involved in which of the following physiological effect?

(1) Initiate flowering and for synchronising fruit-set in pineapples

(2) Induces flowering in mango

(3) The most widely used PGR in agriculture as regulates so many physiological processes

(4) Help overcome the apical dominance

Subtopic:  Ethylene |
 85%
From NCERT
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