Question

How are cactus adapted to survice in desert

Answer 1

Deeper roots to bore deeper into the strata

Succulent leaves to reduce water loss buy transpiration

Hollow stem to store water

Answer 2

In dry habitat the epidermis thicker to prevent the Water loss. Thus The epidermal cell on the aerial parts of the plants secreated waxy water registence layer which prevents loss of water, mechanical injury and invasion by paracytic fungi.