Class 11 Biology Plant Physiology Plant Growth and Development



The cause of dormancy for sometime in fertilized ovule is 
(a)
Presence of Auxin hormone
(b)
Zygote divides only after certain amount of endosperm is formed
(c)
Presence of growth inhibitor ABA
(d)
Presence of least amount of water
Correct answer: (b) 
Solution: The fertilized ovule is got dormant so that the adequate amount of endosperm is formed as for division and for further survival, it is very necessary that ample amount of food is present in the seed.
So the correct option is 'Zygote divides only after a certain amount of endosperm is formed'.

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plant growth and development
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respiration in plants
mineral nutrition
morphology of flowering plants