Question

1. Mention the features of
a. desert plants and animals
b. Terrestrial plants and animals
c. aquatic plants and animals​

Answer 1

Explanation:

1) desert plants and animals :

Low Water Requirements. Desert plant survival depends on being able to exist on very little rainfall. ...

Small or No Leaves. Moisture evaporates through leaves. ...

Thorns. Many desert plants have needles or thorns. ...

2) teresstial plants and animals :

The body is streamlined which helps them for swift movement.

The limbs are long and strong.

Locomotion is digitigrade.

3) aquatic plants and animals :

Answer. Aquatic plants require special adaptations for living submerged in water, or at the water's surface. The most common adaptation is aerenchyma, but floating leaves and finely dissected leaves are also common.

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Answer 2

Explanation:

Adaptations of desert plants and animals-

1. In the desert, the plants are succulent and store water in fleshy leaves, stems or roots. The root system is highly developed for water absorption. In these pants the stem also performs photosynthesis. They have a thick cuticle on stems and leaves which protect from excessive transpiration. Desert plants follow the CAM pathway to prevent excessive water loss.

2. In the desert, animals show various adaptations. Reptiles such as snakes come in the open only at dawn or dusk. Some small desert animals live in burrows to escape the heat. Animals such as camels store fat in their hump. this helps them survive for a long time without food and water.

C) Adaptations of plants to water scarcity

Xerophytic plants are the plants that can survive water scarcity. They have the following adaptations. A thick cuticle on stems and leaves which protect from excessive transpiration. These plants show the presence of sunken stomata which reduce the loss of water. There are certain thick walled cells of hypodermis which do not allow the passage of water and prevents water loss. The leaves are reduced in size and may be modified to form the spines that reduce the surface area for transpiration. The root system is highly developed for water absorption. In these pants the stem also performs photosynthesis.