Page 82 - Science Class 07

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i Animals living in different climatic conditions have adapted to the prevailing climate.
i Weather condition includes temperature, humidity, wind, sunlight, etc.
i Animals found in very cold climate have thick fur on their bodies to avoid extremely cold
temperature, e.g., yak, polar bear, sheep, goats, etc.
i Penguins are also found in polar region. They belong to birds family, but they cannot fly.

i Many species of birds found in polar region such as Siberian cranes, Arctic terns, etc.
migrate to warmer regions to avoid extremely cold winter of the polar region.
i Camels are widely found in the desert. They can live without water for several days.
i Insects found in deserts have outer covering made up of scales which do not allow body
water to evaporate.

i A large number of animal species are found in moderate climate.
i Irresponsible activities of human beings have brought many changes in the climate which
are harmful for living beings.

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A. Tick (3) the correct op on.
1. Which of the following does not influence weather?
(a) Temperature (b) Humidity
(c) Wind (d) Lunar eclipse
2. Which of the following is not found in cold desert?
(a) Polar bear (b) Yak

(c) Penguin (d) Rhinoceros
3. Which of the following is not related to camel?
(a) Thick skin (b) Paddy feet
(c) Hump on its back (d) Heavy eyelids

4. In which type of climate the largest number of animals are found?
(a) Cold (b) Hot
(c) Moderate (d) None of these

5. Which of the following is not a characteris c of a frog?
(a) Breathing through (b) Live both on land and in water
(c) Has webbed feet (d) Lays eggs on land
B. Fill in the blanks.

1. Plants and animals living in different clima c condi ons have ______________ to the
prevailing clima c condi on.

2. Animals living in very cold region have thick layer of fat under the fur called
______________.

82 Science-7