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Why is abscisic acid also known as stres...

Why is abscisic acid also known as stress hormones?

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It leads to closure of stomata during the period of stress like draught, water logging etc.
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Choose the correct option. A. (__i) is used to initiate flowering and for synchronising fruit set in pineapples. B. (__ii) is also known as stress hormone. C. (__iii) is used to induce early seed production in conifers and for increasing sugar yield in sugarcane

ICSE-PLANT GROWTH AND DEVELOPMENT-REVIEW QUESTIONS (VERY SHORT ANSWER TYPE QUESTIONS ( WITH ANSWERS ))
  1. Give 2 important roles of abscisic acid .

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  2. Where is ABA found in plants ?

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  3. Name 2 hormones that are antagonistic in action.

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  4. Which hormones promote activity of each other?

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  5. To promote flowering in pineapples, what are they sprayed with ?

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  6. Name a hormone that brings about seedless fruits by parthenocarpy.

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  7. Which hormone brings about stomatal closure during severe drought cond...

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  8. From which palnt was first naturally occurring cytokinin identified? W...

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  9. Name a selective weed killer.

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  10. Why is abscisic acid also known as stress hormones?

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  11. Which one of the plant growth regulators would you use if you are aske...

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  12. Which one of the plant growth regulators would you use if you are aske...

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  13. Which one of the plant growth regulators would you use if you are aske...

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  14. Which one of the plant growth regulators would you use if you are aske...

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  15. Which one of the plant growth regulators would you use if you are aske...

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  16. Which one of the plant growth regulators would you use if you are aske...

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  17. What would be expected to happen if GA(3) is applied to rice seedli...

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  18. What would be expected to happen if dividing cells stop differentiat...

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  19. What would be expected to happen if a rotton fruit gets mixed with u...

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  20. What would happen if you forget to add cytokinin to the culture medium...

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