NCERT Solution for Class 7 Science Chapter 7 - Weather, Climate and Adaptations of Animals to Climate
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NCERT Solution for Class 7 Science Chapter 7 - Weather, Climate and Adaptations of Animals to Climate Page/Excercise 77
The elements that determine the weather of a place are:
Concept insight: Weather of a place is the change in day-to-day atmospheric conditions.
The maximum temperature of the day occurs in the afternoon while the minimum temperature occurs early in the morning.
Concept insight: Recall the concept of weather.
(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 the polar region and the tropical region.
Concept insight: Recall the concept of climate.
NCERT Solution for Class 7 Science Chapter 7 - Weather, Climate and Adaptations of Animals to Climate Page/Excercise 78
(a) Jammu and Kashmir: Moderately hot and wet
(b) Kerala: Hot and wet
(c) Rajasthan: Hot and dry
(d) North-east India: Wet
Concept insight: Climate of a place is affected by the following factors:
ii. Amount of rainfall
iii. Amount of heat received by the place
Weather changes frequently.
Concept insight: Weather changes day to day.
(i) Diets heavy on fruits Tropical rainforests
(ii) White fur Polar regions
(iii) Need to migrate Polar regions
(iv) Loud voice Tropical rainforests
(v) Sticky pads on feet Tropical rainforests
(vi) Layer of fat under skin Polar regions
(vii) Wide and large paws Polar regions
(viii) Bright colours Tropical rainforests
(ix) Strong tails Tropical rainforests
(x) Long and large beak Tropical rainforests
No, none of the above characteristics can be adapted for both regions.
Concept insight: Adaptations of animals in Polar and Tropical Regions.
The climate of tropical rainforests is generally hot and humid with continuous rain. These hospitable climatic conditions support huge populations of plants and animals.
Concept insight: As tropical rainforests are home to great variety of plant species so it provides variety of food to animals also. It has good climatic conditions also.
Certain kind of animals can be found in particular climatic conditions as they can adapt well to those conditions.
For example, a polar bear is adapted for Polar Regions because it has a thick skin and a layer of fat to keep it warm in cold conditions.
Therefore, certain types of animals live only in certain climatic conditions.
Concept insight: Adaptations of animals in different climatic conditions.
An important and widely found animal of Indian tropical rainforests is the elephant.
It has adapted remarkably to the conditions of this region.
Some of the adaptations are as follows:
(i) It uses its trunk as nose so that it has a strong sense of smell.
(ii) Its trunk is also used for picking up food.
(iii) Its tusks are used to tear bark of trees. It can eat barks of trees.
(iv) The soles of their feet are covered with thick pads. These pads can handle their enormous weight. They also prevent sound so that the elephants can move silently.
(v) Its large ears have strong sense of hearing.
Concept insight: Adaptations in elephants.
(iv) tropical rainforests
Concept insight: Adaptations in big cats.
(i) A white fur, fat below skin, keen sense of smell.
Concept insight: Fur and fat under the skin protects it from low temperature and good sense of smell helps it to find its prey.
NCERT Solution for Class 7 Science Chapter 7 - Weather, Climate and Adaptations of Animals to Climate Page/Excercise 79
(i) hot and humid
Concept insight: Climatic conditions of Tropical rainforests.
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