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Avena curvature test is a bioassay for e...

Avena curvature test is a bioassay for examining the activity of

A

auxins

B

gibberellins

C

cytockinins

D

ethylene

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The correct Answer is:
A
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NCERT FINGERTIPS ENGLISH-PLANT GROWTH AND DEVELOPMENT-Plant growth regulators
  1. Hormone involved in phototropism is

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

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

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  4. Gibberellin was first extracted from

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  5. Which one is paired incorrectly?

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

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  7. High concentration of auxin is present in

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

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

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

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

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  12. The term 'auxin precursor' refers to

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

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

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

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

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

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  18. The hormone responsible for apical dominance is

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  19. Functions of auxins include

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  20. To get a carpet like grass, lawns are moved regularly, this is done to

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