Learning objectives: Habitat Adaptation Terrestrial plants

WHERE PLANTS LIVE- ADAPTATIONS

Learning objectives:

• Habitat

• Adaptation

• Terrestrial plants

WHERE DO THEY LIVE?

A habitat is the natural home or environment of a plant,

animal, or other organism. It provides the organisms that live

there with food, water, shelter and space to survive.

For e.g- water is the natural environment /habitat of lotus

plant and land is the natural environment of mango tree.

HABITAT

ADAPTATIONS

Adaptation is the process where an organism

becomes better suited to its habitat.

Adaptation are special features that help a

plant survive in its habitat.

CLASSIFICATION OF PLANT HABITAT

❑ Land or terrestrial habitats

❑ Water or aquatic habitats

Land or terrestrial plants:

i. Plants in the plains

ii. Plants in deserts

iii. Plants in mountains

iv. Plants in heavy-rainfall areas

v. Plants along the sea coast

vi. Plants in Marshy or swampy areas

PLANTS IN THE PLAINS

• Grow in plain and flat Surface of the earth.

• Have several branches and leaves.

• Grow in warmer climate of the plains and shed their leaves in

autumn.

• E.g

Mango tree Neem tree

PLANTS IN DESERTS

• Long root system in desert plants spread and go deep into

ground to absorb the available water.

• Have spines which discourage animals from eating plants for

water.

• Leafless plants conduct photosynthesis through their green

stems.Lack of leaves helps reduce water loss.

• Waxy coating on stems and leaves help reduce water loss.

• E.g

Cactus Prickly spines

PLANTS IN MOUNTAINS

• In mountains plants are tall, straight and cone shaped.

• Have needle –like leaves which prevents too much

water loss and helps shed snow more easily.

• They are usually flowerless.

Deodar tree Pine tree

PLANTS IN HEAVY-RAINFALL AREAS

• In areas with heavy rainfall the plants are

evergreen, which means they do not lose their

leaves.

• E.g

Cotton plant Lychee plant

PLANTS IN MARSHY OR SWAMPY AREAS

• The place where the soil is very clayey and

sticky is called marshy area.It is difficult for

plants to grow in such areas as air cannot

reach the roots.To overcome this problem

plants here have breathing roots tp absorb air.

• E.g-

Mangroves

PLANTS ALONG SEA COAST

• Coconut trees grow well in these areas. They are

adapted to grow in salty water and high

rainfall.The seeds of plants growing in coastal

regions are carried from place to place or

dispersed by water.

Plants in coastal areas

WORKSHEET

Observation activity:

• Make a list of plants and trees growing in your

surroundings.

• Talk to the plants of your own choice and write a

dialogue about how they survive.

Exercise

Q. In a tropical rainforest ,where it is hot and it rains a

lot, which of these would be helpful adaptation for

plants.Also say why.

(a)Waxy leaves (b)Tips © Both of these

Q. What are the adaptations of desert plants?

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• Date of submission-

Previous tasks-11.04.2020