NCERT Solutions for Class 7 Science Chapter 7 Weather Climate And Adaptations Of Animals To Climate

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Updated at 2021-05-07


NCERT solutions for class 7 Science Chapter 7 Weather Climate And Adaptations Of Animals To Climate Exercise

Q.1 Name the elements that determine the weather of a place.



NCERT Solutions for Class 7 Science Chapter 7 Weather Climate And Adaptations Of Animals To Climate


Answer :

The elements that determine the weather of a place are temperature, humidity, rainfall, wind-speed of that place.

Q.2 When are the maximum and minimum temperatures likely to occur during the day?



NCERT Solutions for Class 7 Science Chapter 7 Weather Climate And Adaptations Of Animals To Climate


Answer :

The maximum temperature of the day occurs in the afternoon while the minimum temperature occurs early in the morning.

Q.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 __________.



NCERT Solutions for Class 7 Science Chapter 7 Weather Climate And Adaptations Of Animals To Climate


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.

Q.4 Indicate the type of climate of the following areas:
(a) Jammu and Kashmir: _________________________________
(b) Kerala: ____________________________________________
(c) Rajasthan: __________________________________________
(d) North-east India: _____________________________________



NCERT Solutions for Class 7 Science Chapter 7 Weather Climate And Adaptations Of Animals To Climate


Answer :

(a) Jammu and Kashmir: moderately hot and wet

(b) Kerala: hot and wet

(c) Rajasthan: hot and dry

(d) North-east India: wet

Q.5 Which of the two changes frequently, weather or climate?



NCERT Solutions for Class 7 Science Chapter 7 Weather Climate And Adaptations Of Animals To Climate


Answer :

Weather changes frequently.

Q.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?



NCERT Solutions for Class 7 Science Chapter 7 Weather Climate And Adaptations Of Animals To Climate


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

No, these characteristics can’t be adapted for both regions as they are specific for a given region.

Q.7 The tropical rainforest has a large population of animals. Explain why it is so.



NCERT Solutions for Class 7 Science Chapter 7 Weather Climate And Adaptations Of Animals To Climate


Answer :

(1) The tropical rainforest has a large population of animals due to favorable climatic conditions and the easy availability of different kinds of foods.

(2) The tropical region has a hot climate because of its location around the equator.

(3) The minimum temperature in this region is 15°C. During hot summers, the temperature may cross 40°C. Days and nights are almost equal in length throughout the year.

(4) These regions are hot and humid with ample rainfall which supports the growth of animals and plants.

Q.8 Explain, with examples, why we find animals of certain kind living in particular climatic conditions.



NCERT Solutions for Class 7 Science Chapter 7 Weather Climate And Adaptations Of Animals To Climate


Answer :

(1) We find animals of certain kinds living in particular climatic conditions because every living organism is adapted to live in a particular habitat.

(2)
Animals of different kinds live in particular climatic conditions according to their survival and interaction with the environment. They develop their feature according to the area they live in.

(3)
For example, a polar bear is adapted for polar regions. It has thick skin and a layer of fat to keep it warm in cold conditions. However, with these adaptations, it will not be possible for it to survive in tropical regions where it is hot.

(4)
Similarly, a monkey is adapted to live in the forests with features such as a long and sturdy tail, loud voice, etc. These features are of no importance in polar regions where vegetation is very little.

(5) Thus, animals of a certain kind live in particular climatic conditions.

Q.9 How do elephants living in the tropical rainforests adapt themselves?



NCERT Solutions for Class 7 Science Chapter 7 Weather Climate And Adaptations Of Animals To Climate


Answer :

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 a 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 the bark of trees. It can eat the bark 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 a strong sense of hearing. Its long ears help them in keeping cool in a hot and humid climate.

Thus elephant, the huge animal has adapted these few features to survive in the tropical rain forest.

Q.10 Choose the correct option which answers the following question:
A carnivore with stripes on its body moves very fast while catching its prey. It is likely to be found in
(i) polar regions (ii) deserts
(iii) oceans (iv) tropical rainforests



NCERT Solutions for Class 7 Science Chapter 7 Weather Climate And Adaptations Of Animals To Climate


Answer :

(iv) tropical rainforests

Q.11 Which features adapt polar bears to live in extremely cold climate?
(i) A white fur, fat below skin, keen sense of smell.
(ii) Thin skin, large eyes, a white fur.
(iii) A long tail, strong claws, white large paws.
(iv) White body, paws for swimming, gills for respiration.



NCERT Solutions for Class 7 Science Chapter 7 Weather Climate And Adaptations Of Animals To Climate


Answer :

(i) A white fur, fat below skin, keen sense of smell.

Q.12 Which option best describes a tropical region?
(i) hot and humid
(ii) moderate temperature, heavy rainfall
(iii) cold and humid
(iv) hot and dry



NCERT Solutions for Class 7 Science Chapter 7 Weather Climate And Adaptations Of Animals To Climate


Answer :

(i) hot and humid



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