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NCERT Solutions for Class 7 Social Science - Life in the Deserts

Q1. Answer the following questions. 
(a) What are the two types of deserts found in the world?
Ans: Two types of deserts found in the world are:
(i) Cold Desert 
(ii) Hot Desert
NCERT Solutions for Class 7 Social Science - Life in the Deserts

(b) In which continent is the Sahara desert located?
Ans: The Sahara desert is located in Africa.

(c) What are the climatic conditions of the Ladakh desert?
Ans: The climate of Ladakh is extremely cold and dry due to high altitude. The air at this altitude is so thin that the heat of the sun can be felt intensely.

(d) What mainly attracts tourists to Ladakh?
Ans: Natural beauty, the gompas, treks to see the meadows and glaciers, and witnessing ceremonies and festivities mainly attract tourists to Ladakh.

(e) What type of clothes do the people of the Sahara desert wear?
Ans: The people of the Sahara desert wear heavy robes as protection against dust storms and hot winds.

(f) Name the trees that grow in Ladakh.
Ans: Trees that grow in Ladakh are Groves of willows and poplars, and fruit trees such as apples, apricots, and walnuts bloom.

Q2. Tick the correct answer. 
(i) Sahara is located in which part of Africa
(a) Eastern 
(b) Northern
(c) Western
Ans: (b) Northern

(ii) Sahara is what type of dessert 
(a) Cold 
(b) Hot 
(c) Mild 
Ans: (b) Hot

(iii) The Ladakh desert is mainly inhabited by 
(a) Christians and Muslims 
(b) Buddhists and Muslims 
(c) Christians and Buddhists
Ans: (b) Buddhists and Muslims

(iv) Deserts are characterized by
(a) Scanty vegetation 
(b) Heavy precipitation 
(c) Low evaporation
Ans: (a) Scanty vegetation

(v) Hemis in the Ladakh is a famous 
(a) Temple 
(b) Church 
(c) Monastery
Ans: (c) Monastery

(vi) Egypt is famous for growing 
(a) Wheat 
(b) Maize 
(c) Cotton
Ans: (c) Cotton

Q3. Match the following.

(i) Oasis

(a) Libya

(ii) Bedouins

(b) monastery

(iii) Oil

(c) glacier

(iv) Gangri

(d) depressions with water

(v) Lainayum

(e) cold desert

-

(f) Sahara

Ans: 

(i) Oasis

(d) depressions with water

(ii) Bedouins

(f) Sahara

(iii) Oil

(a) Libya

(iv) Gangri

(c) glacier

(v) Lama yum

(b) monastery


Q4. Give reasons.
(i) There is scanty vegetation in the deserts. 
(ii) People of the Sahara desert wear heavy robes. 
Ans: 
(i) Deserts are characterized by extreme climatic conditions. They receive very low rainfall per year and temperature is either very high or very low. As a result, there is scanty vegetation in the desserts
(ii) People of the Sahara desert wear heavy robes as protection against dust storms and hot winds. Sahara is a hot desert; therefore, dust storms and hot winds containing sands are common there. It also helps protect them from the sun.


Q5. Map skills.
(i) On the outline map of Africa, mark the Sahara desert and any four countries around it.
(ii) On the outline map of India, mark the Karakoram Range, Zanskar Range, Ladakh and Zoji La pass.
Ans: 
(i)
NCERT Solutions for Class 7 Social Science - Life in the Deserts

(ii) 
NCERT Solutions for Class 7 Social Science - Life in the Deserts

The document NCERT Solutions for Class 7 Social Science - Life in the Deserts is a part of the Class 7 Course Social Studies (SST) Class 7.
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FAQs on NCERT Solutions for Class 7 Social Science - Life in the Deserts

1. What are the characteristics of desert ecosystems?
Ans. Desert ecosystems are characterized by extreme aridity, sparse vegetation, and wide temperature variations. They have low annual rainfall, high evaporation rates, and limited water availability. The vegetation in deserts is adapted to conserve water and includes plants like cacti and succulents.
2. How do plants and animals survive in desert environments?
Ans. Plants and animals in deserts have developed various adaptations to survive in harsh desert environments. Plants have deep roots to access underground water, and some have thick waxy leaves or spines to reduce water loss. Animals have adapted by being nocturnal, burrowing underground, or having the ability to store water in their bodies.
3. How does the scarcity of water impact life in the desert?
Ans. The scarcity of water in deserts has a significant impact on life. It limits the availability of water for plants and animals, making survival challenging. Plants have adapted to conserve water and store it in their tissues, while animals have evolved to obtain water from their food or by conserving water through specialized physiological mechanisms.
4. What are some of the unique plant and animal species found in deserts?
Ans. Deserts are home to a variety of unique plant and animal species that have adapted to the harsh conditions. Some examples of desert plants include cacti, succulents, and desert shrubs. Desert animals include camels, kangaroo rats, scorpions, and sidewinder snakes, among others.
5. How do human activities affect desert ecosystems?
Ans. Human activities can have both positive and negative impacts on desert ecosystems. Positive impacts include the development of sustainable agricultural practices and conservation efforts. However, negative impacts include overgrazing by livestock, habitat destruction due to urbanization, and pollution from mining and industrial activities, which can disrupt the delicate balance of desert ecosystems.
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