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A thickened underground stem X of a plant which is swollen with stored food has a number of points Y on its surface. When the old stem X is planned in the soil of a field in the next growing season, then each point Y present on its surface grows into a new plant.(a)What is the general name of the underground stems like X?
(b)Give one example of X.
(c)What are points Y present on X known as?
(d)Is it necessary to plant the whole of stem X in the ground to obtain its new plants? Explain your answer.
(e)What is the name of this method of reproduction of plants?
(f)What is the advantage of growing new plants from the underground stems like X?
(a) The general name of the underground stems like X is a tuber.
(b) An example of a tuber is a potato.
(c) Points Y present on tuber is known as eyes.
(d) It is not necessary to plant the whole stem tuber in the ground to obtain its new plants. A part of the tuber containing the eye can give rise to a completely new plant.
(e) This method of reproduction of tuber is known as vegetative reproduction.
(f) The advantage of growing new plants from the underground stems like tuber is to produce new plants like potatoes.
Updated on: 23-Mar-2023
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