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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 tubers2. Give one example of X.(i) Potato tubers(ii) Onion tubers(iii) Brinjal tubers3. What are points Y present on X known as ?(i) spores(ii) buds(iii) tentacles(iv) holes4. Is it necessary to plant the whole of stem X in the ground to obtain its new plants ?(i) YES(ii) NO5. What is the name of this method of reproduction of plants ?(i) Regeneration(ii) Fission(iii) Vegetative propagation by tubers(iv) Budding |
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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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