Question

For quick revegetation of degraded areas, which one of the following types of tree seedlings is preferred?

• A. Tree seedlings
• B. Grasses
• C. Fast-growing tree seedlings
• D. Nitrogen-fixing tree seedlings

Hint:

Revegetation:
- Nitrogen-fixing trees improve soil fertility.
- Examples: Acacia, Leucaena, Casuarina.
- Help in restoration of degraded lands.

Answer 1

The Correct Option is D

Step 1: Understanding the Question:
This question tests knowledge of reclamation and revegetation practices.

Step 2: Detailed Explanation:
For quick revegetation of degraded areas, nitrogen-fixing tree seedlings (D) are preferred.
Nitrogen-fixing trees (e.g., legumes) improve soil fertility by adding nitrogen.
They are hardy and can grow in poor soils, making them ideal for degraded areas.
Other options:
- Tree seedlings (A): Too generic.
- Grasses (B): Useful but not as effective for long-term revegetation.
- Fast-growing tree seedlings (C): Fast growth is important, but nitrogen fixation is more critical.
Thus, nitrogen-fixing tree seedlings are preferred.

Step 3: Final Answer:
Thus, nitrogen-fixing tree seedlings are preferred for quick revegetation, which corresponds to option (D).
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