Question

Assertion :The Himalayan ranges show change in vegetation from tropical to tundra. Reason: In the mountainous areas with an increase in altitude, there is a corresponding decrease in temperature, which leads to a change in vegetation types.
Select the correct option from the given alternatives.

• A. Both (A) and (R) are true, and(R) explain (A)
• B. Both (A) and (R) are true, but (R) does not explain (A)
• C. (A) is true and (R) is false
• D. (A) is false and (R) is true

Answer 1

Answer: (A)

With increase in altitude there is decrease in temperature and rainfall. This is why Himalays have varied vegetation, with tropical dense forest to Tundra forest in which growth is hindered by lower temperatures. On Himalayan slopes above the height of 915 mt the fall in temperature affects the type of vegetation and its growth.

The correct option is A.