How are cacti adapted to survive in a desert?

1. Thick waxy stems
2. Short roots
3. Leaves modified into spines
4. Deep long roots
5. Thin stems

Q. Cacti can survive in 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 of waxy substance, which helps to prevent evaporation of water.
c. The roots are distributed on the surface to absorb water.
d. Leaves are modified into spines to prevent loss of water.

Q.

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 of cuticle, 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

Q. The spines of a cactus plant are modified
(a) stems.
(b) leaves.
(c) roots.
(d) flowers.

Q. Which of the following statements is/are correct?

Statement 1: The leaves in a cactus are modified into spines.

Statement 2: Thick waxy stem and spines reduces water loss through transpiration in a cactus.

Q.

Study the given list of adaptations in plants.

(a) Leaves reduced into spines

(b) Drip tips

(c) Sloping branch

(d) Fleshy stem

(e) Thick waxy layer on stem

(f) Cone shaped trees

(g) Photosynthetic stem

Which of the given adaptations are of plants inhabiting rainforests (X), mountains (Y) and deserts (Z)?