Class 7 Geography chapter 8 Human Environment Interactions (The Tropical and the Subtropical Region)

 

NCERT Solutions For Class 7 Geography Social Science Chapter 8 Human Environment Interactions (The Tropical and the Subtropical Region)

1. Answer the following questions briefly:

1. Name the continent in which the Amazon Basin in located.
2. What are the crops grown by the people of the Amazon Basin?
3. Name the birds that you are likely to find in the rain forests of the Amazon.
4. What are the major cities located on the river Ganga?
5. Where are the one-homed rhinoceros found?

Answer:

1. South America.
2. Crops are grown by the people of Amazon Basin:
   • Tapioca
   • Pineapple
   • Sweet-potatoes
   • Cassava (manioc)
   • Maize, coffee, and cocoa are other important crops.
3. Birds:
   • Toucans
   • Humming Birds
   • Bird of paradise with their brilliantly coloured plumage, oversized bills.
4. Major Cities located on the banks of River Ganga:
   • Dev Prayag
   • Rishikesh
   • Haridwar
   • Kanpur
   • Allahabad
   • Varanasi
   • Patna
5. In Assam.

2. Tick the correct answer:
(a) Toucans are a type of
(i) birds                              (ii) animals     (iii) crops.
(b) Manioc is the staple food of
(i)  Ganga Basin                 (ii) Africa   (iii) Amazon.
(c) Kolkata is located on the river
(i)  Orange                          (ii) Hooghly   (iii) Bhagirathi.
(d) Deodars and firs are a type of
(i)  Coniferous trees            (ii) Deciduous trees   (iii) Shrubs.
(e) Bengal tiger is found in
(i)   Mountains                     (ii) Delta area   (iii) Amazon.
Answer: (a)-(i), (b)—(iii), (c)-(ii), (d)—(i), (e)—(ii).

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)—(f), (ii)—(d), (iii)—(g), (iv)—(c),(v)—(a)

4. Give reasons:

1. The rainforests are depleting.
2. Paddy is grown in the Ganga-Brahmaputra plains.

Answer:

01. The Rainforests are depleting because of the following reasons:

• Developmental activities have been started in a big way, resulting in the cutting of rainforests for various purposes.

• The indigenous population has been pushed out who practiced conservation activities of forests and wildlife.

• Industries are being set up after clearing the forests.

• Lumbering has developed.

• Topsoil is washed away during rains and lush green forests turn into barren lands.

02. Paddy is grown in the Ganga-Brahmaputra Plains because of the following:

• Deep loamy soil is found in these plains due to the deposition of silt by the rivers for thousands of years.

• Rivers in floods spread a new layer of alluvial every year. Hence it does not require manuring.

• Canals from rivers supply ample water for irrigation of paddy fields during the dry season.

• The lower portion of the plains receives adequate rainfall.

• Cheap labour is available from the densely populated plains.

• Means of transportation are developed to raise the movement of paddy and rice to the nearby markets.

• New technologies are being adopted by the farmers because they can afford it due – to their sound financial position.