Tropical deciduous (monsoon) forests are generally found in regions receiving…
2019
Tropical deciduous (monsoon) forests are generally found in regions receiving annual rainfall of
- A.
70–200 cm
- B.
50–150 cm
- C.
150–200 cm
- D.
70–100 cm
Show answer & explanation
Correct answer: A
Concept
Tropical deciduous forests are also called monsoon forests because their growth follows a strongly seasonal rainfall cycle.
They occur across a broad rainfall belt and shed leaves during the dry season to reduce water loss.
Application
The accepted geographic range for monsoon forests is about 70–200 cm of annual rainfall. The wetter part supports moist deciduous formations, while the lower-rainfall part supports dry deciduous formations.
Contrast
50–150 cm begins too far into drier conditions and does not cover the wetter monsoon-forest belt.
150–200 cm covers only the wetter part of the deciduous-forest range.
70–100 cm describes only the drier part of the deciduous-forest range.
Result
Therefore, the required annual rainfall range is 70–200 cm.