Desert plants have long roots that help them to -absorb water nbsp- nbsp-increase photosynthesis nbsp-prevent transpiration nbsp-retain water nbsp-

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Standard IX

Biology

Adaptations of Animals

Desert plants...

Question

Desert plants have long roots that help them to ________.

prevent transpiration

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absorb water

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retain water

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increase photosynthesis

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Solution

The correct option is A
Explanation of the correct option:
Desert plants grow in water scarce areas, their roots are long and go deep into the soil for absorbing water.
The leaves in desert plants are reduced to spines which reduces surface area and minimise water loss by transpiration.
Since their leaves are reduced to spines, their stem is green and performs photosynthesis.
They have fleshy stem with a thick waxy coat to retain water.
Explanation of the incorrect option:
Option B,C and D didnot satisfy the appropriate explanation of the given question.
Final answer: Desert plants have long roots that help them to absorb water.

Suggest Corrections

Similar questions

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.

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

Give suitable explanation for the following :

(a) A higher rate of transpiration is recorded on a windy day rather than on a calm day.

(b) Excessive transpiration results in the wilting of the leaves.

(d) More transpiration occurs from the lower surface of a dorsiventral leaf.

(e) Cork and bark of trees help in preventing loss of water.

(f) Perspiration and transpiration help to cool the body temperature of the organism.

(g) On a bright sunny day, the leaves of certain plants roll up.

Q. How does transpiration help the roots absorb water & minerals from the soil?

Question 23
An increase in carbon dioxide content in the atmosphere would not cause

(a) more heat to be retained by the environment
(b) increase in photosynthesis in plants
(c) global warming
(d) abundance of desert plants

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