The correct option is D Both statements are true and statement 2 is not the correct explanation for statement 1.
Cactus is a plant that grows in environments that have a scarcity of water. This xerophyte stores water in its body and uses it when required. It has very long roots to stretch into the ground for the water buried deep underground. While deserts do have extreme temperatures, this is not a reason for the growth of the cactus plant in deserts.