GENERAL KNOWLEDGE

Detailed explanation-1: -Cactus are very distinct plants found in extremely hot environments such as deserts. In fact, no other plants are able to tolerate the extreme heat and the lack of water in these environments.

Detailed explanation-2: -A cactus is able to survive in the desert due to the following features: (i) It has long roots that go deep inside the soil for absorbing water. (ii) Its leaves are in the form of spines to prevent water loss through transpiration. (iii) Its stem is covered with a thick waxy layer to retain water.

Detailed explanation-3: -Explanation: A cactus plant grows in deserts where there is very little water.

Detailed explanation-4: -Almost all genera of cacti arose in the Americas and are distributed from Canada to Chile. They are now found in many parts of the world, especially Australia, South Africa, and Mediterranean countries.