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NCERT solution class 7 Social Science chapter 8 Human Environment Interactions – The Tropical and the Subtropical Region

Page No 63:

Question 1:

Answer the following questions.

(i) Name the continent in which the Amazon basin is located.

(ii) What are the crops grown by the people of the Amazon basin?

(iii) Name the birds that you are likely to find in the rainforests of the Amazon.

(iv) What are the major cities located on the River Ganga?

(v) Where is the one-horned rhinoceros found?

Answer:

(i) The Amazon basin is located in South America.

(ii) The people of the Amazon basin mainly grow tapioca, pineapple and sweet potato. They also grow cash crops like coffee, maize and cocoa.

(iii) Toucans, humming birds and bird of paradise are commonly found in the rainforests of the Amazon.

(iv) Allahabad, Kanpur, Varanasi, Lucknow, Patna and Kolkata are the major cities located on the River Ganga.

(v) The one-horned rhinoceros is found in the Brahmaputra plain.

Question 2:

Tick the correct answer.

(i) Toucans are a type of

(a) Birds(b) Animals(c) Crops

(ii) Manioc is the staple food of

(a) Ganga Basin(b) Africa(c) Amazon

(iii) Kolkata is located on the river

(a) Orange(b) Hooghly(c) Bhagirathi

(iv) Deodars and firs are a type of

(a) Coniferous trees(b) Deciduous trees(c) Shrubs

(v) Bengal tiger is found in

(a) Mountains(b) Delta area(c) Amazon

Answer:

(i) Toucans are a type of

(a) Birds(b) Animals(c) Crops

(ii) Manioc is the staple food of

(a) Ganga Basin(b) Africa(c) Amazon

(iii) Kolkata is located on the river

(a) Orange(b) Hooghly(c) Bhagirathi

(iv) Deodars and firs are a type of

(a) Coniferous trees(b) Deciduous trees(c) Shrubs

(v) Bengal tiger is found in

(a) Mountains(b) Delta area(c) Amazon

Question 3:

Match the following.

(i) Cotton textile(a) Assam
(ii) Maloca(b) Terrace farming
(iii) Piranha(c) Sericulture
(iv) Silk worm(d) Slanting roof
(v) Kaziranga(e) Ganga plain

(f) Varanasi

(g) Fish

Answer:

(i) Cotton textile(f) Varanasi
(ii) Maloca(d) Slanting roof
(iii) Piranha(g) Fish
(iv) Silk worm(c) Sericulture
(v) Kaziranga(a) Assam

Question 4:

Give reasons.

(i) The rainforests are depleting.

(ii) Paddy is grown in the Ganga−Brahmaputra plains.

Answer:

(i) There was a time when the green belt of rainforests covered about 12−14% of Earth’s land surface. Large-scale developmental activities have led to the clearing of large tracts of land in the rainforests (for example, clearing of land for agriculture, cattle pasture, wood, mining and road building). Today, the rainforests cover only about 2−6% of the Earth’s land surface. Due to constant deforestation, the top soil—which is held together by the trees—gets washed away as the rains fall. As a result, the once lush green forests change into barren landscapes.

(ii) The Ganga−Brahmaputra plains provide flat, fertile land for the cultivation of crops. The amount of rainfall in this region is also quite high, which makes it a suitable place for the growth of paddy—a crop that requires sufficient water.

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