Timber line is a limit above which
(a) Tress are found
(b) Trees are absent
(c) Plants do not survive
(d) Plants occur in abundance

Options

A. Tress are found
B. Trees are absent
C. Plants do not survive
D. Plants occur in abundance

Answer

To solve the question regarding the timberline, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of Timberline**:
- The timberline refers to a specific elevation or latitude above which certain conditions prevent the growth of trees.

2. **Differentiate Between Tree Line and Timberline**:
- It's important to note that there is a distinction between the tree line and the timberline. The tree line is where trees can grow, while the timberline is where they cannot.

3. **Identify Environmental Conditions**:
- At the timberline, environmental conditions such as low temperatures, high altitudes, and possibly low moisture levels make it difficult for trees to survive.

4. **Evaluate the Options**:
- (a) Trees are found: This is incorrect as timberline indicates the absence of trees.
- (b) Trees are absent: This aligns with the definition of timberline.
- (c) Plants do not survive: While this may be true for trees, some other plants may survive at the timberline, making this option too broad.
- (d) Plants occur in abundance: This is incorrect as the timberline is characterized by a lack of tree growth.

5. **Conclusion**:
- Based on the understanding that trees cannot survive above the timberline due to harsh environmental conditions, the correct answer is (b) Trees are absent.

### Final Answer:
(b) Trees are absent.

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