Identify to which category the plant belongs to.

1. Photosynthesis is carried out by stem.
2. Stem is covered by a waxy layer.
3. Leaves are in the form of spines.

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Solution

Leaves are very small or reduced to spines in desert plants. This helps in reducing loss of water from the leaves through transpiration. The leaf-like structure in cactus is the stem that carries out photosynthesis. It is covered by a waxy layer, which helps the plant to retain water.

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Q. Identify to which category the plant belongs to.

1. Photosynthesis is carried out by stem.
2. Stem is covered by a waxy layer.
3. Leaves are in the form of spines.

Complete the following sentences with the help of the given words: waxy, spines, stem, absent, transpiration

(1) In a cactus plant, the leaves are either ___ or reduced to spines and these help plants to reduce water loss through ___.

(2) ___ performs photosynthesis in the cactus plant.

(3) Stem is covered with a thick ___ layer to retain water.

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.

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. 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.

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Identify to which category the plant belongs to. 1. Photosynthesis is carried out by stem. 2. Stem is covered by a waxy layer. 3. Leaves are in the form of spines.

Leaves are very small or reduced to spines in desert plants. This helps in reducing loss of water from the leaves through transpiration. The leaf-like structure in cactus is the stem that carries out photosynthesis. It is covered by a waxy layer, which helps the plant to retain water.

Identify to which category the plant belongs to.

1. Photosynthesis is carried out by stem.
2. Stem is covered by a waxy layer.
3. Leaves are in the form of spines.