Question

Cacti survive in a desert because:

a. It has a flat green stem to store water and prepare food by photosynthesis.

b. The stem is covered with a thick layer, which helps to preserve water.

c. Its roots are distributed on the surface to absorb water.

d. Leaves are modified into spines to prevent loss of water.

• A. Both a and b are wrong
• B. Both b and c are wrong
• C. a is wrong but b is correct
• D. Both a and d are correct

Answer 1

The correct option is D

Both a and d are correct

Cactus survives in deserts due to following adaptations: It has a flat green stem to store water and prepare food by photosynthesis. The stem is also covered with a thick waxy layer, which helps to retain water. Its roots go very deep into the soil for absorbing water. Leaves turn into spines to prevent loss of water.