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One hormone hastens maturity period in j...

One hormone hastens maturity period in juvenile conifers, a second hormone control xylem differentiation , while the third increases the tolerance of plants to various stresses they are respectively

A

Auxin, gibberellin, ABA

B

Gibberellin, auxin, ABA

C

Auxin, gibberellin, cytokinin

D

Gibberellin, auxin, cytokinin

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The correct Answer is:
B
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ARIHANT NEET-PLANT GROWTH AND DEVELOPMENT -CHAPTER EXERCISES (MEDICAL ENTRANCES GALLERY )
  1. Identify the correct pair of combination (i) Zeatin - adenine deriva...

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  2. Assertion (A). Ethylene induces ripening Reason (R). Ethylene is a g...

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  3. One hormone hastens maturity period in juvenile conifers, a second hor...

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  4. Which of the following statements regarding photoperiodism is false

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  5. One hormone stimulates the closure of stomata and another one influenc...

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  6. Which one is correct for blooming of short day plants

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  7. The hormone which reduces transpiration rate by inducing stomatal clos...

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  8. Which of the following is a dicot weedicide

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  9. A few normal seedlings of tomato were kept in a dark room. After few d...

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  10. Which is not the effect of ethylene ?

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  11. Dr. F. Went noted that is coleoptile tips were removed and placed on a...

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  12. In flowering plants, the site of perception of light/dark duration is

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  13. If a plant produces flowers when exposed to alternating periods of 5 h...

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  14. Spraying sugarcane crop with a plant hormone increases length of plant...

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  15. Cells attaining their maximum size in terms of wall thickening and pro...

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  16. During seed germination its stored food is mobilised by

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  17. Movement of tendrils in response to touch is known as

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  18. The phytohormone, which helps in germination of seed is

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  19. Compare the statement A and B. Statement A Ethylene is a gas, which ...

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  20. Hormone replacing the requirement of vernalisation is

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