NCERT solution for class 7 > Science > Chapter 7 - Weather climate and adaptations of animals to climate

 NCERT solution > Class 7 >  Science 

Chapter 7 - Weather climate and adaptation of animals to climate 

Exercise 

Q1. Name the elements that determine the weather of a place ? 

Answer -Temperature , Humidity ,Rainfall and Wind speed are the element which represent the weather of the place 

Q2. When the maximum and minimum temperatures likely to occur during the day ? 

Answer - Minimum temperature occurs at early in the morning time while maximum temperature occurs at the afternoon time 

Q3. Fill in the blanks 

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 air the climate of that place will be hot and dry

iii) The two regions of the Earth which extreme climatic conditions are Polar region and Tropical region 

Q4. Indicate the type of climate of the following areas 

a) Jammu and Kashmir- Moderately hot and wet

b) Kerala -Hot and wet

c) Rajasthan -Hot and dry

d) North East India - Wet

Q5. Which of the two changes frequently weather climate  ? 

Answer- Weather changes frequently

Q6. 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) White 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 region do you think that some of these characteristics can be adapted for both regions 

Answer-  

i) Diets heavy on fruits - Tropical rainforest 

ii) White fur - Polar regions 

iii) Need to migrate - Polar regions 

iv) Loud voice  - Tropical rainforest 

v) Sticky pads on feet  - Tropical rainforest 

vi) Layer of fat under skin  - Polar regions 

vii) Wide and large paws- Polar region 

viii) Bright colours -  Tropical rainforest 

ix) Strong tails - Tropical rainforest 

x) Long and large beak - Tropical rainforest 

Not any of the above characteristics can be adapted for both regions 

Q7 . The tropical rainforest has a large population of animals explain why it is so ? 

Answer- The climate of the Tropical rainforest is generally hot and humid with continuous rain and it is useful climatic condition for the support of large population of plants and animals

Q8. Explain with examples why we find animals of certain kind living in particular climatic conditions?

Answer- Certain kind of animal can be found in a particular climatic condition because they adapted for those condition for example polar bear is adapted for polar regions it has following adaptation in them body for living that place 

• They have a thick layer of fur on their skin and fat below the skin to keep them warm in cold condition 
• Monkey for the forest region they have a characteristics like longtail love advice and these are not important for the polar region that for certain type of animals are live only in certain climatic condition

Q9 . How do elephant living in the tropical rainforest adapt itself   

Answer- 

The adaptation in elephant are as follows 

• Its trunk is also used for picking a food 
• It uses its trunk as a nose so that it has a strong sense of smell 
• Is it's tusk are used to tear the bark of trees and the bark of trees 
• It has large ears to collect the strong sense of sound 
• The soles of their feet are covered with thick pads which can handle their huge weight

choose the correct option which answer the following questions 

Q10. 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 - Tropical rainforest

Q11. Which features adapt polar bears to live in extremely slow cold climate 

i) White fur, fat below skin ,keen sense of smell 

ii) Thin skin, large eyes, a white fur 

iii) A long tails, strong claws ,white large paws 

iv) White body ,paws for swimming ,gills for respiration  

Answer - A white for fat below skin keen sense of smell

Q12. Which option best describe a tropical region? 

i) Hot and humid 

ii) Moderate temperature heavy rainfall 

iii) Cold and humid 

iv) Hot and dry  

Answer - Hot and humid