NCERT Solutions for class 7 science Chapter 7

Weather, Climate and Adaptations of Animals to Climate

NCERT Solutions for Class 7 Science chapter 7 Exercise Question

Question 1

Name the elements that determine the weather of a place.

Answer

Temperature, humidity, rainfall and wind are the elements that determine the weather of a place.

Question 2

When are the maximum and minimum temperatures likely to occur during the day?

Answer

Maximum temperature of day time occurs during afternoon whereas minimum temperature occurs early in the morning.

Question 3

Fill in the blanks:

(i) The average weather taken over a long time is called ___________.

(ii) A place receives very little rainfall and the temperature is high throughout the year, the climate of that place will be ___________ and ___________ .

(iii) The two regions of the earth with extreme climatic conditions are ___________ and __________.

Answer

(i) The average weather taken over a long time is called climate .

(ii) A place receives very little rainfall, and the temperature is high throughout the year, the climate of that place will be hot and dry.

(iii) The two regions of the earth with extreme climatic conditions are polar region and tropical region.

Question 4

Indicate the type of climate of the following areas:

(a) Jammu and Kashmir: _________________________________

(b) Kerala: ____________________________________________

(d) North-east India: _____________________________________

Answer

(a) Jammu and Kashmir: moderately hot and wet

(b) Kerala: hot and dry

(d) North-east India: wet

Question 5

Which of the two changes frequently, weather or climate?

Answer

Weather changes frequently

Question 6

Following are some of the characteristics of animals:

(i) Diets heavy on fruits (ii) White fur

(iii) Need to migrate (iv) Loud voice

(v) Sticky pads on feet (vi) Layer of fat under skin

(vii) Wide and large paws (viii) Bright colours

(ix) Strong tails (x) Long and large beak

For each characteristic indicate whether it is adaptation for tropical rainforests or polar regions. Do you think that some of these characteristics can be adapted for both regions?

Answer

(i) Diets heavy on fruits- Tropical rain forests

(ii) White fur – Polar regions

(iii) Need to migrate- Polar regions

(iv) Loud voice-Tropical rain forests

(v) Sticky pads on feet – Tropical rain forests

(vi) The layer of fat under skin – Polar regions

(vii) Wide and large paws – Polar regions

(viii) Bright colours – Tropical rain forests

(ix) Strong tails – Tropical rain forests

(x) Long and large beak – Tropical rain forests

Question 7

The tropical rainforest has a large population of animals. Explain why it is so.

Answer

Continuous rainfall with Hot and humid temperaturein the tropical rainforest help the animals for survival

Question 8

Explain, with examples, why we find animals of certain kind living in particular climatic conditions.

Answer

Animals are adapted to survive in the conditions in which they live. Animals are adapted to survive in the conditions in which they live. Animals living in very cold and hot climate must possess special features to protect themselves against the extreme cold or heat Animals living in polar regions have adaptations such as white fur, strong sense of smell, thick skin, lot of fats to protect it from cold, wide and large paws for swimming

Question 9

How do elephants living in the tropical rainforest adapt itself?

Answer

The elephant has adapted to the conditions of rainforest in many remarkable ways. They have a strong sense of smell for which they use their trunk. Its trunk is also used for picking up and holding food. They have long ears that help them to keep cool in the hot and humid climate and to hear very soft sounds. Its tusk are used to tear bark of trees for consumption.

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