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Weather, Climate And Adaptation Of Animals To Climate

Class 7th Science NCERT Exemplar Solution
Multiple Choice Questions
  1. The maximum and minimum temperature displayed daily in the weather bulletin refer to the…
  2. Out of the given definitions, which is the most appropriate definition of climate?A.…
  3. Which of the following briefly describes the desert climate?A. Hot and humid B. Dry and…
  4. Paheli went to a wildlife sanctuary where she saw dense vegetation of trees, shrubs, herbs…
  5. Given below are some adaptive features of animals: (i) A layer of fat under the skin (ii)…
  6. Which of the following statement is incorrect for penguins?A. They huddle together B. They…
  7. Read the following environmental conditions of tropical rain forests. (i) Hot and humid…
  8. The coldest region on earth is the -A. polar region B. tropical region C. temperate region…
  9. Choose the odd one from the following options :A. A thick layer of fat under the skin B.…
Very Short Answer Questions
  1. “A fish dies when taken out of water whereas a wall lizard will die if kept under water.”…
  2. Give one example of an animal that can live both in water and on land.…
  3. State whether the following statements are True or False. Correct the false statements.…
  4. Unscramble the following words using the hints given against them. (i) MATLICE (Hint:…
Short Answer Questions
  1. Match the animals mentioned in Column I with their characteristic features given in Column…
  2. Why is it difficult to predict the weather of a place while it is easy to predict its…
  3. Name two animals each that live in the Polar region and Tropical rain forests.…
  4. Write two common adaptive features of a polar bear which help in keeping it warm.…
  5. Mention two adaptive features of penguin that help it in swimming.…
  6. Differentiate between: (i) Weather and climate. (ii) Humidity and rainfall (iii) Climates…
Long Answer Questions
  1. Fill in the blanks in the paragraph given below. Weather of a place is the day-to-day…
  2. Given below is a list of climatic conditions and some examples of animals. Read them…

Multiple Choice Questions
Question 1.

The maximum and minimum temperature displayed daily in the weather bulletin refer to the –
A. highest day temperature and lowest night temperature of the day.

B. highest day temperature and highest night temperature of the month.

C. temperature recorded at 12 noon and at mid night (00.00 hrs).

D. the average highest temperature of the day and average lowest temperature of night.


Answer:

The highest temperature reached during the day is called the ‘maximum’ temperature and the ‘lowest’ temperature during the night is called the ‘minimum’ temperature.


Question 2.

Out of the given definitions, which is the most appropriate definition of climate?
A. Changes in weather conditions in a year.

B. Average weather pattern of many years.

C. Change in weather pattern in a few years.

D. Weather conditions during summer.


Answer:

The difference between weather and climate is a measure of time. Weather is what conditions of the atmosphere are over a short period of time, and climate is how the atmosphere "behaves" over relatively long periods of time.


Question 3.

Which of the following briefly describes the desert climate?
A. Hot and humid

B. Dry and humid

C. Hot and dry

D. Hot and wet


Answer:

In desert, temperature is high during most part of the year. But during winter, which lasts only for a few months, the temperature is low. This region receives very little rainfall. So, It is hot and dry.


Question 4.

Paheli went to a wildlife sanctuary where she saw dense vegetation of trees, shrubs, herbs and also a variety of animals like monkeys, birds, elephants, snakes, frogs, etc. The most likely location of this sanctuary is in the –
A. temperate region

B. tropical region

C. polar region

D. coastal region


Answer:

this reason is located near the equator, because of continuous warmth and rain, this region supports a wide variety of plants and animals.


Question 5.

Given below are some adaptive features of animals:

(i) A layer of fat under the skin

(ii) Long, curved and sharp claws

(iii) Slippery body

(iv) Thick white fur

Which of them are the adaptive features of a polar bear?
A. (i) only

B. (i) and (ii) only

C. (i), (ii) and (iii) only

D. (i), (ii), and (iv) only


Answer:

A layer of fat insulates its body from cold. Long, curved and sharp claws help to walk on ice and Thick white fur keeps them warm.


Question 6.

Which of the following statement is incorrect for penguins?
A. They huddle together

B. They cannot swim

C. They have webbed feet

D. They have streamlined body


Answer:

Penguins have webbed feet and streamlined body makes them good swimmers. They huddle together to keep themselves warm.


Question 7.

Read the following environmental conditions of tropical rain forests.

(i) Hot and humid climate

(ii) Unequal lengths of day and night

(iii) Abundant rain fall

(iv) Abundant light and moisture

Identify the conditions from the above list that are responsible for the presence of a large number of plants and animals in tropical rain forests.
A. (i) and (ii)

B. (i) and (iii)

C. (i), (iii) and (iv)

D. (ii) and (iv)


Answer:

Because of continuous warmth and rain, this region supports a wide variety of plants and animals.


Question 8.

The coldest region on earth is the –
A. polar region

B. tropical region

C. temperate region

D. coastal region


Answer:

Polar regions are covered with snow.They don’t receive the sunlight continuously for 6 months making it the coldest region on the earth.


Question 9.

Choose the odd one from the following options :
A. A thick layer of fat under the skin

B. White Fur

C. Long grasping tail

D. Wide and large feet with sharp claws


Answer:

The Long grasping tail is the feature of the animal in the tropical region while the other reasons describe the adaption of the polar bear.



Very Short Answer Questions
Question 1.

“A fish dies when taken out of water whereas a wall lizard will die if kept under water.” Mention the term used to describe such abilities that allow fish and lizard to survive in their respective habitats.


Answer:

Adaption term is used to describe such abilities that allow fish and lizard to survive in their respective habitats. Animals are adapted to survive in the conditions in which they live.



Question 2.

Give one example of an animal that can live both in water and on land.


Answer:

Frogs can live both in water and on land. They are adapted to live both in water and on land.



Question 3.

State whether the following statements are True or False. Correct the false statements.

(a) It is easy to predict weather rather than climate.

(b) Since very few preys are available, the polar bear does not need to have a strong sense of smell.

(c) Penguins stick together to fight the cold polar climate.

(d) Tropical rain forests are cool and humid throughout the year because of heavy rains all the time.


Answer:

(a) True

Weather is conditions of the atmosphere over a short period of time, and climate is how the atmosphere "behaves" over long periods of time.


(b) False


Polar bear should have a strong sense of smell to catch prey.


(c) True


Sticking together provides warmth to their body.


(d) False


Tropical Rainforest are hot and humid. Hot due to located near the equator and humid due to rainfall.



Question 4.

Unscramble the following words using the hints given against them.

(i) MATLICE (Hint: weather pattern in a region over a period of time)

(ii) AROPL (Hint: coolest region on earth)

(iii) TREHMEOMRET (Hint: used to measure temperature)

(iv) UHIDYTMI (Hint: a feature of weather)


Answer:

i) CLIMATE


ii) POLAR


iii) THERMOMETER


iv) HUMIDITY




Short Answer Questions
Question 1.

Match the animals mentioned in Column I with their characteristic features given in Column II.



Answer:


(a) Red Eyed Frog has developed sticky pads on its feet to help it climb trees on which it lives.


(b) Penguin bodies are streamlined and their feet have webs, making them a good swimmer.


(c) Tiger has thick skins and sensitive hearing.


(d) Lion-Tailed Macaque is the silver-white mane, which surrounds the head from the cheeks down to its chin.



Question 2.

Why is it difficult to predict the weather of a place while it is easy to predict its climate?


Answer:

Weather is the day-to-day condition of the atmosphere at a place with respect to the temperature, humidity, rainfall, etc. It is a process which can change very rapidly, Hence it is difficult to predict. On the other side, it is easier to predict climate as it is the average weather pattern taken for a long time.



Question 3.

Name two animals each that live in the Polar region and Tropical rain forests.


Answer:

Polar Regions – Penguins ,Polar Bears ,Reindeers.

Tropical Rain Forests – Tiger, Lion-Tailed Macaque, Elephants etc.



Question 4.

Write two common adaptive features of a polar bear which help in keeping it warm.


Answer:

The two common adaptive features of a polar bear which help in keeping it warm are:

i) It has two thick layers of fur which keeps it warm.


ii) It has a layer of fat under the skin which insulates its body from cold.



Question 5.

Mention two adaptive features of penguin that help it in swimming.


Answer:

The two adaptive features of penguin that help it in swimming are:

I)Their bodies are streamlined.


II) Their feet have webs .



Question 6.

Differentiate between:

(i) Weather and climate.

(ii) Humidity and rainfall

(iii) Climates of polar region and tropical rain forest

(iv) Maximum and minimum temperatures of the day


Answer:

(i) 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. Whereas The average weather pattern taken over a long time, say 25 years, is called the climate of the place.

(ii) Humidity is the amount of water vapor in the air whereas Rainfall is the quantity of rain falling within a given area in a given time.


(iii) In the Polar Region, the climate is mostly cold and the temperature drops to -37°C whereas Climate in Tropical Rain Forests is dry and humid.


(iv) Maximum and minimum temperatures of the day are the highest temperature and the lowest temperature recorded respectively.




Long Answer Questions
Question 1.

Fill in the blanks in the paragraph given below.

Weather of a place is the day-to-day condition of the (a)_____ with respect to ____(b)____, _____(c)______, ____(d)______, _____(e)______ at that place, while climate is the _____(f)______ weather pattern taken over many years.


Answer:

(a) – Atmosphere

(b) – Temperature


(c) – Humidity


(d) – Rainfall


(e) – Wind Speed


(f) – Average


Definition of Weather is 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.


And the definition of Climate is The average weather pattern taken over a long time, say 25 years, is called the climate of the place.



Question 2.

Given below is a list of climatic conditions and some examples of animals. Read them carefully and place the items in the relevant columns as shown.

Penguin, Gorrila, Monkey, Reindeer, Assam, Greenland, Sun does not rise for six months, Hot and humid climate, Days and nights are almost equal in length throughout the year, Winter temperature around –37°C, Western Ghats



Answer:


Tropical Region has a hot and humid climate with equal lengths of day and night throughout the year.Monkeys, Gorillas are the common animals that are found in Tropical Rain Forests. In India, Tropical Rain Forests are in Assam and the Western Ghats.


In Polar regions, the temperature drops to around –37°C during winter.They don’t get the sunlight for nearly 6 months. Penguins and Reindeer are the common animals that are found in Polar Regions. Greenland is one of the countries of the Polar Region.