Question

Assertion: The Himalayan ranges show changes 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 the Assertion and Reason are true and Reason is the correct explanation of Assertion.
B) Both the Assertion and Reason are true but Reason is not the correct explanation of Assertion
C) Assertion is correct but Reason is incorrect.
D) Both Assertion and Reason are incorrect.

Answer 1

Hint:
-With the change in altitude, there is a temperature change.
-As temperature changes, there are changes in the flora and fauna existing.
-The help of mountains influences the atmosphere since they remain in the way of wind frameworks and force air to ascend over them.

Complete answer:
The character and degree of vegetation are principally controlled by temperature alongside the dampness noticeable all around, precipitation, and soil. On the slants of the Himalayas and the slopes of the Peninsula over the stature of 915 meters, the fall in the temperature influences the sorts of vegetation and its development, and changes it from tropical to subtropical temperature. So in the mountainous territory with the expansion in height, there is a gradual decline in temperature, which prompts a change in vegetation types.

Additional Information:
Himalayan vegetation can be comprehensively grouped into four kinds—tropical, subtropical, mild, and mountainous —every one of which wins in a zone decided primarily by rise and precipitation.

Mountain lands give a dissipated but assorted exhibit of territories wherein a huge scope of plants and creatures can be found. At higher elevations brutal natural conditions for the most part win, and treeless snow-capped vegetation, whereupon the current record is engaged, is upheld. Lower inclines regularly are covered by montane woodlands. At even lower levels mountain lands grade into different sorts of landform and vegetation—e.g., tropical or calm woodland, savanna, scrubland, desert, or tundra.

Hence the correct answer option ‘A’.

Note:
- The tropical evergreen rainforest is limited to the muggy lower regions of the eastern and focal Himalayas.

-With diminishing precipitation and expanding rise toward the west, the rainforests offer an approach to tropical deciduous woodlands.