Question

Which of these is a modification to save water?
(a) spine
(b) potato
(c) tendril
(d) prop roots

Answer 1

(a) spine
In deserts, there is shortage of water and the leaves of some plants are turned into prickly spines to reduce surface area and minimise water loss. Photosynthesis in these plants does not take place in leaves. In these plants, stem becomes thick, fleshy and green. Photosynthesis takes place in the stem rather than in the spiny leaves.