Q7 of 62 Page 191

What are phytohormones?

Hormones secreted by plants are known as phytohormones.


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5

Name one plant hormone which:

(a) Retards growth burning extremely dry season?


(b) Is present in greater concentration in fruits and seeds?

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What does role brain play during reflex action?

 8

Expand ABA, giving its function.

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Why the use of iodised salt advisable?