Question

Leaves of cactus are modified into thorns​

Answer 1

To reduce loss of water through transpiration leaves of cactus plants are modified into spines.

Step-by-step explanation:

Answer 2

leaves are reduced to spines in a cactus , so that the water does not get evaporated with the heat of the SUN. 1. They are present in hot deserts which are scarce in water so in order to reduce the loss of water by Transpiration from the surface of the leaves, its leaves are reduced to spines