Question

How do the Himalayas play a vital role in economic and culture development of India

Answer 1

a.The great Himalayas in the North serve as a natural protected barriers from any kind of intrusion thereby give it a military and political advantage. 
b. These lofty peaks also form a natural boundary wall between Nepal and Tibet/China in the north and between India and Nepal in the east
c. Most of the glaciers feeding the Indian rivers are located in the Himalayas. Himalayas are the source of many perennial rivers and their tributaries.
d. Being in rich in bio diversity, the Himalayas is home to thousands of plants and animals species
e. For instance, Tropical rainforest - They are mainly found in the eastern slopes of Himalayas. They are dense forest and grow close to each other. Evergreen trees like oaks, chestnuts are found in high altitude region of Himalayas.  
f. ​Tropical deciduous are the monsoon forests found in the large part of India and in the lower slopes  or foothills of Himalayas. . Trees shed their leaves in the dry season to conserve water, Important trees found are sal, teak, neem and shisham.
g Temperate forests having coniferous trees like pine, deodar, silver fir, spruce and cedar,​ are found in the Southern slopes of Himalayas.
h. Further Himalyas, are also a major attraction for the tourist and one of the popular tourist destinations, contributing in enhancing the income of the country.

Answer 2

1) The seasonal cycles of accumulation of ice, movement and melting of glaciers are the sources of the perennial rivers.

2) The Himalayas influence India's climate in different ways.

3) They protect the great plains of India from the cold winds of central Asia during severe winter.

4) They cause for summer rains and monsoon type of climate.

5) The perennial rivers bring a lot of silt, making the plains very fertile.

6) The fertile plains are useful for cultivation.

7) The valleys are useful for orchards and growing vegetables.

8) The hill stations attract the tourists so as to increase tourism.

9) The rivers are useful in producing hydel power.

10) Hence it is said that the Himalayas play a vital role in India's development.