Question

Tropical dense forest is due to
A) High temperature and excessive rain
B) Low temperature and excessive rain
C) High temperature and lesser rain
D) Wild animals (tigers, lions, bears etc.)

Answer 1

Hint: 'Dense forests' are classified as areas with a tree canopy density of 70% or higher. The humid, moist climate and large amount of precipitation or rain that occurs each year distinguish tropical dense forests. Because of the high amount of rainfall and warm temperatures, tropical dense forests can sustain a high species richness of plants.

Complete answer:
 Tropical rain forests are found practically year-round in equatorial or sub-equatorial locations with plentiful warmth and substantial rainfall (200-350 cm/year).

Let us evaluate the options.
High temperature and excessive rain: Option A is correct. This is because Tropical dense forests have a humid and moist climate and receive a large amount of precipitation each year. Also, they are located near the equator because of the high temperature in the area. High temperature facilitates high evaporation and thus, the forests receive a large amount of rainfall.

Low temperature and excessive rainfall: Option B is incorrect. This is because Tropical dense forests are located near the equator and in the tropics so they cannot have low temperatures as the sunlight received in this area is almost direct hence increasing the temperature of the area.

High temperature and lesser rain: Option C is incorrect. This is because the forest has an abundance of trees and greenery which help the clouds to precipitate in the form of rain. Therefore, the lesser rain is not possible in the area.

Wild animals (tigers, lions, bears etc.): Option is incorrect. This is because it is the climate that makes these forests suitable for animals to live in.

Due to excessive rainfall, the soil has been heavily leached and is hence deficient in nutrients. A significant amount of nutrients are still locked up in vegetation. Thus, option A is the right one. The given sentence is Tropical dense forest is due to high temperature and excessive rain.

Thus the correct answer is option ‘A’.

Note: Tropical dense forests can be found in India's Western Ghats and some portions of the Eastern Himalayas, such as the Assam region and the Andaman Islands. Productivity is at its peak. In one hectare, about 200 distinct types of tall trees are expected, which is the maximum in comparison to other forest kinds. The biomass of standing crops is the highest.

Many tropical forests have been designated as High-Biodiversity Wilderness Areas, and they still face a variety of threats, including more local pressures like habitat loss and degradation, as well as anthropogenic climate change.