• Follow Us on Twitter
  • Follow Us on Twitter
  • Follow Us on Twitter
  • Follow Us on Twitter
  • Follow Us on Twitter
  • Follow Us on Twitter
  • Follow Us on Twitter
  • Follow Us on Twitter

Adaptation – CBSE NCERT Science (Biology)

Published: 4 years ago

Category: CBSE, Education, Science

Tags: , , ,

Description:

Adaptation – CBSE NCERT Science (Biology)

ADAPTATION

The presence of features or certain habits which help an organism to live in a particular habitat or environment is called adaptation.

Different living organisms adapt to live in their surroundings  in different ways.

Adaptations involve a combination of features, such as   SHAPE,SIZE,COLOUR,STRUCTURE and BEHAVIOUR.

ADAPTATION IN TERRESTRIAL HABITAT

Deserts have acute shortage of water and a very hot and dry  climate.
They have a short rainy season followed by a long dry season.
Living in such hard conditions needs adapting to these situations.

ADAPTATION IN A DESERT ANIMAL

CAMEL

A camel has long legs which help to keep the upper part of the body away from the heat of the sand on the ground.

After drinking water once, it can live for many days  without water. A camel excretes a small amount of urine and its  dung is dry.
A camel does not sweat.

Its feet have thick pads which protect it from the hot desert sand.

A camel has long eyelashes which do not allow flying sand to reach its eyes during a sandstorm.

A camel can close its nostrils , so that sand does not enter the respiratory system during a sandstorm.

Fat stored in its hump acts as a food reservoir.

DESERT SNAKES, RATS, LIZARDS AND INSECTS

These desert animals stay in burrows deep in the sand to keep away from the intense heat during the day.
They come out only during the night, when it is cooler.

ADAPTATIONS IN DESERT PLANTS

Leaves are either absent, small or reduced to spines. Stem is spongy and store water.

Stems are covered with a thick waxy layer which helps in retaining water inside the plant body.

Stem is green and it prepares food for the plant.

The root system goes deep down into the soil for absorbing water.

THIS IS HOW A CACTUS ADAPTS

Leaves are reduced to spines.

Stem is green and spongy.

Roots are long and reach the deep layers of the soil.

MOUNTAINS

Mountains have a cold, very windy and a rainy weather.
The ground in the upper reaches are usually covered with snow.
These conditions make life very hard for both plants and animals.

ADAPTATION IN MOUNTAIN PLANTS

They grow close to the ground to avoid getting uprooted by strong and frequent winds.

ADAPTATION IN MOUNTAIN TREES

They are normally cone shaped with sloping branches, so that the snow and water does not stay on them and ruin them.
Leaves are usually needle shaped which reduces evaporation rate specially in winters.

They also have long roots for fixing themselves tightly on slopes.

ADAPTATION IN MOUNTAIN ANIMALS

YAK –  A thick coat of fur protects it from the cold.

MOUNTAIN GOAT –  A thick coat of fur protects it from the cold.

SNOW LEOPARD – White in color and has long hairs to protect it from the cold.

ADAPTATION IN MOUNTAIN ANIMALS

Thick white fur to merge with its surroundings and to protect it from the intense cold.

Thickly padded feet to walk on snow.

Body has a thick layer of fat which keeps it warm and provides it with energy during the winter months when food is scarce.

ADAPTATION IN MOUNTAIN ANIMALS

POLAR FOX

Polar  foxes have deep thick fur which is brown in summer and white in winters in order to merge with its surroundings.
Its paws are also covered with furs.

One Response to “Adaptation – CBSE NCERT Science (Biology)”

  1. vidisa says:

    I am really wondering how you are providing this invaluable information so useful and i am cheerful to lend her heart to your lessions. thank you sir.Do we need to pay any thing that we do happily.

Leave a Reply

You must be logged in to post a comment.