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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 planted in the soil of a field in the next growing season, then each point Y present on its surface grows into a new plant.

1. What is the general name of the underground stems like X ?

(i) Stem tubers

(ii) Leaf tubers

2. Give one example of X.

(i) Potato tubers

(ii) Onion tubers

(iii) Brinjal tubers

3. What are points Y present on X known as ?

(i) spores

(ii) buds

(iii) tentacles

(iv) holes

4. Is it necessary to plant the whole of stem X in the ground to obtain its new plants ?

(i) YES

(ii) NO

5. What is the name of this method of reproduction of plants ?

(i) Regeneration

(ii) Fission

(iii) Vegetative propagation by tubers

(iv) Budding

1 Answer

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Best answer

1. (i) Stem tubers

2. (i) Potato tubers

3. (ii) buds

4. (ii) No

5. (iii) Vegetative propagation by tubers

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