Question 4
What is the function of a stem in a plant?
What is the function of a stem?
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. (a) What is the general name of the underground stems like X? (b) Give one example of X. (c) What are the points Y present on X was 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?