Question

why do cacti have spines instead of leaves ?​

Answer 1

$\huge\bf\blue {Hey \:Mate!!!}$

Cactus have spines instead of leaves so that they can prevent loss of water from the surface of the leaves by the process of transpiration .

Moreover, cactus are found in desert areas when there is lack of water.

Spines also protect cactus from predators .

@ItsMysteriousGirl✍