NCERT Solutions for Class 7 Science Chapter 7 Weather, Climate and Adaptations of Animals to Climate

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

Answer: The elements such as humidity, rainfall, temperature and wind speed determines weather of a place.

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

Answer: The maximum temperature occurs in afternoon and minimum temperature occurs in early morning.

3. Fill in the blanks:

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

Answer: climate of the place

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

Answer: hot and dry

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

Answer: the polar region and the tropical rainforest

4. Indicate the type of climate of the following areas:

(a) Jammu and Kashmir: _________________________________

Answer: Moderately hot and Wet

(b) Kerala: ____________________________________________

Answer: Hot and Wet

(c) Rajasthan: __________________________________________

Answer: Hot and Dry

(d) North-east India: _____________________________________

Answer: Wet

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

Answer: The weather changes frequently.

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 rainforest or polar regions. Do you think that some of these characteristics can be adapted for both regions?

Answer:

• The characteristics adopted by tropical rainforests – (i) Diets heavy on fruits, (iv) Loud voice, (v) Sticky pads on feet, (viii) Bright colours, (ix) Strong tails, (x) Long and large beak
• The characteristics adopted by polar regions – (ii) White fur, (iii) Need to migrate, (vi) Layer of fat under skin, (vii) Wide and large paws

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

Answer:

Tropical rainforests has large population of animals, because, the climate is generally hot and humid. Also, tropical rainforests receives lot of rain. All these factors are suitable for adaptation of large number and variety of plants and animals.

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

Answer: As animals adapt conditions to live in particular climate. For example, penguins in polar region – they have thick white and black skin. White colors help them to merges easily with white background. Thick skin protect them from cold. They also have fat which again protect them from cold. They also huddled together to keep themselves warm.

9. How do elephant living in the tropical rainforest adapt itselfChoose the correct option which answers the following question:

Answer: The huge trunk of elephant acts as its nose, which has a strong sense of smell. Trunk helps in picking up food. Tusks of elephant are modified teeth, which helps to tear bark of trees, that elephant wants to eat. Also, the large ears helps an elephant to hear very soft sounds. Ears also helps elephants to stay cool in hot and humid climate of tropical rainforest. This is how elephant living in rainforest adapt itself.

10. 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 rainforest

Answer: (iv) tropical rainforests

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.

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

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

Answer: (i) hot and humid

Check other lessons NCERT Solutions for Class 7

Download free NCERT textbook class 7 Science – Chapter 7 Weather, Climate and Adaptations of Animals to Climate