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Which plant hormone induces the phenomen...

Which plant hormone induces the phenomenon of photoropism in plants?

A

Auxins

B

Ethylene

C

Cytokinin

D

Gibberellin

Text Solution

Verified by Experts

The correct Answer is:
A
Auxins play a very important role in certain tropic movements shown by plants, e.g., phototropism in shoots and geotropism in roots.
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NCERT FINGERTIPS-PLANT GROWTH AND DEVELOPMENT-Plant Growth And Development
  1. Functions of plant growth promoters and plant growth inhibitros are gi...

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  2. Hormone involved in phototropism is

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  3. Which plant hormone induces the phenomenon of photoropism in plants?

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  4. Avena curvature test is a bioassay for examining the activity of

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  5. Gibberellin was first extracted from

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  6. Which one is paired incorrectly?

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  7. Who isolated auxins from tips of coleoptiles of oat seedings?

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  8. High concentration of auxin is present in

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  9. Which of the following effects of auxins on plants is the basis for th...

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  10. Which of the following hormones is used in root formation on stem cutt...

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  11. Select the correct statements (s) regarding auxins.

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  12. Apical dominance is dicot plants is due to the presence of morein the ...

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  13. The term 'auxin precursor' refers to

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  14. Read the given statements and select the correct option. (i) Darwin ...

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  15. In the process of apical dominance, lateral buds are unable to grow in...

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  16. Decapitation i.e. removal of shoot tips in a plant usually results in

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  17. In tea plantations and hedge making, gardeners trim the plants regular...

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  18. Removal of auxin source demonstrates that leaf abscission is by auxin,...

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  19. The hormone responsible for apical dominance is

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  20. Functions of auxins include

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