NCERT Class 7 Science Seventh Chapter Weather, Climate and Adaptations of Animals Exercise Solutions
Weather, Climate and Adaptations of Animals
Inside Questions With Answers:
Name the Department who produced the weather reports?
Ans. Meteorological Department.
Name the instrument which measure the rainfall?
Ans. rain gauge.
What is called weather at that place?
Ans. The day to-day condition of the atmosphere at a place with respect to the temperature, humidity, rainfall, wind speed, etc., is called the weather at that place.
Define elements of the weather?
Ans. The temperature, humidity, and other factors are called the elements of the weather.
All changes in the weather are caused by the ______.
Define maximum and minimum thermometers?
Ans. There are special thermometers for this purpose, called maximum and minimum thermometers.
What is called climate of the place?
Ans. The average weather pattern taken over a long time, say 25 years, is called the climate of the place.
Name Some well-known countries that belong to the polar regions
Ans. Some well-known countries that belong to the polar regions are Canada, Greenland, Iceland, Norway, Sweden, Finland, Alaska in U.S.A. and Siberian region of Russia.
Name some countries where the tropical rainforests are found?
Ans. Some countries where the tropical rainforests are found are India, Malaysia, Indonesia, Brazil, Republic of Congo, Kenya, Uganda, and Nigeria.
Write in details about adaptations of polar bear.
Ans. The white fur is not easily visible in the snowy white background.
Its predator and pray are unable to see it.
It has two thick layers of fur.
It has a layer of fat under its skin.
It has a very strong sense of smell.
It has a long curved and sharp claws. So on.
On which time of the day maximum and minimum temperature occurs.
Ans. The maximum temperature of the day occurs generally in the afternoon while the minimum temperature occurs in the early morning.
Write Some adaptations of animals living in the tropical rainforests.
Ans. Some adaptations of animals living in the tropical rainforests include living on the trees, development of strong tails, long and large beaks, bright colours, sharp patterns, loud voice, diet of fruits, sensitive hearing, sharp eyesight, thick skin, ability to camouflage in order to protect themselves from predators, etc.
In which area Tropical rainforests are found?
Ans. Western Ghats and Assam in India, Southeast Asia, Central America and Central Africa.
Name some of animals which are found in Tropical rainforests?
Ans. Monkeys, apes, gorillas, tigers, elephants, leopards, lizards, snakes, birds and insects.
Exercises Questions with answer?
- Name the elements that determine the weather of a place.
Ans. The elements that determine the weather of a place are temperature, humidity, rainfall, wind-speed, Wind direction etc.
- When are the maximum and minimum temperatures likely to occur during the day?
Ans. Check at inside questions and answers.
- Fill in the blanks:
(i) The average weather taken over a long time is called ___________.
Ans. Hot, Dry
(ii) A place receives very little rainfall and the temperature is high throughout the year, the climate of that place will be ___________ and ___________ .
Ans. Polar, Tropical regions.
(iii) The two regions of the earth with extreme climatic conditions are ___________ and __________.
Ans. Climate of that place.
- Indicate the type of climate of the following areas:
(a) Jammu and Kashmir: _________________________________
Ans. Hot as well as Cold.
(b) Kerala: ____________________________________________
Ans. Hot as well as Dry.
(c) Rajasthan: __________________________________________
(d) North-east India: _____________________________________
- Which of the two changes frequently, weather or climate?
- 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?
|Tropical rainforests||Polar regions|
|Diets heavy on fruits||White fur|
|Need to migrate||Layer of fat under skin|
|Loud voice||Wide and large paws|
|Sticky pads on feet|
|Long and large beak|
No, I don’t think some of these characteristics can be adapted for both regions.
- The tropical rainforest has a large population of animals. Explain why it is so.
Ans. These regions get plenty of rainfall.
8.Explain with examples, why we find animals of certain kind living in particular climatic conditions.
- How do elephant living in the tropical rainforest adapt itself?
Ans. It has adapted to the conditions of rainforests in many remarkable ways. Look at its trunk. It uses it as a nose because of which it has a strong sense of smell. The trunk is also used by it for picking up food. Moreover, its tusks are modified teeth. These can tear the bark of trees that elephant loves to eat. So, the elephant is able to handle the competition for food rather well. Large ears of the elephant help it to hear even very soft sounds. They also help the elephant to keep cool in the hot and humid climate of the rainforest.
(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
(iv) tropical rainforests
Ans: (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.
Ans: (iv) White body, paws for swimming, gills for respiration
(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
Ans: (i) hot and humid