Examkin

Question

Difficulty: MediumSoils, Natural Vegetation, and Agriculture in India

Arrange the following natural vegetation types in India in ascending order of the average annual precipitation (rainfall) required for their growth:

  1. 1Tropical Thorn Forests
  2. 2Tropical Dry Deciduous Forests
  3. 3Tropical Moist Deciduous Forests
  4. 4Tropical Evergreen Forests

Answer

The correct sequence from lowest to highest required annual rainfall is: Tropical Thorn Forests (under 50 cm), Tropical Dry Deciduous Forests (70–100 cm), Tropical Moist Deciduous Forests (100–200 cm), and Tropical Evergreen Forests (above 200 cm).
In India, natural vegetation categories correspond closely to total annual precipitation levels. Ordering these vegetation types from dry to wet yields: Tropical Thorn Forests (under 50 cm) < Tropical Dry Deciduous Forests (70–100 cm) < Tropical Moist Deciduous Forests (100–200 cm) < Tropical Evergreen Forests (above 200 cm).

Step-by-Step Solution

1
Determine the precipitation threshold for Tropical Thorn Forests
Tropical Thorn Forests develop in arid and semi-arid tracts where annual rainfall is below 50 cm.
This places thorn forests at the lowest position of the rainfall gradient.
2
Determine the precipitation threshold for Tropical Dry Deciduous Forests
Tropical Dry Deciduous Forests occur in areas receiving between 70 cm and 100 cm of annual rainfall.
This establishes dry deciduous forests as the second item in the ascending sequence.
3
Determine the precipitation threshold for Tropical Moist Deciduous Forests
Tropical Moist Deciduous Forests develop in regions receiving between 100 cm and 200 cm of annual rainfall.
This places moist deciduous forests above dry deciduous forests.
4
Determine the precipitation threshold for Tropical Evergreen Forests
Tropical Evergreen Forests require dense rainfall exceeding 200 cm annually along with warm humid conditions.
This places evergreen forests at the highest position in the rainfall ordering.

Key Concept

Zonal distribution of Indian forest types aligned with precipitation gradients.
Rate this question

Topics

Soils, Natural Vegetation, and Agriculture in India

More questions from this topic