Question

why does a cactus plant have leaves reduced to spines​

Answer 1

Answer: here is your answer !

Explanation:

The leaves of a cactus have become spines to limit the loss of water through transpiration. The plant has to prevent water loss as there is very little rainfall in the areas of the cactus. The leaves of 'cactus' are reduced to 'spines' to prevent the loss of water by transpiration.

Answer 2

This is because the cactus leaves are adapted cactus tree so that water does not evaporate in the scorching heat. and it can live many days without water ..