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Question
Write the physiological effects of Cytokinins.
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Solution
- Cytokinin promotes cell division in the presence of auxin (IAA).
- Induces cell enlargement associated with IAA and gibberellins
- Cytokinin can break the dormancy of certain light-sensitive seeds like tobacco and induces seed germination.
- Cytokinin promotes the growth of lateral bud in the presence of apical bud.
- Application of cytokinin delays the process of aging by nutrient mobilization. It is known as the Richmond Lang effect.
- Cytokinin:
- increases rate protein synthesis
- induces the formation of inter-fascicular cambium
- overcomes apical dominance
- induces the formation of new leaves, chloroplast and lateral shoots.
- Plants accumulate solutes very actively with the help of cytokinins.
RELATED QUESTIONS
______ is a powerful growth inhibitor.
Select the correctly matched one.
| A) Human urine | i) Auxin –B |
| B) Corn gram oil | ii) GA3 |
| C) Fungus | iii) Abscisic acid II |
| D) Herring fish sperm | iv) Kinitin |
| E) Unripe maize grains | v) Auxin A |
| F) Young cotton bolls | vi) Zeatin |
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Substances which originate at the tip of the stem and control growth elsewhere are ______.
The plant hormone used to destroy weeds in a field is ______
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Read the following statements on plant growth and development.
- Parthenocarpy can be induced by auxins.
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- Dedifferentiation is a pre-requisite for redifferentiation.
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Choose the option with all correct statements.
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