Statement-A: The mosses have an elaborate mechanism of spore dispersal. Statement-B: Leafy stage in mosses develops from secondary protonema as an apical bud.

Options

A. Both statement-A and statement-B are incorrect
B. Both statement-A and statement-B are correct
C. Statement-B is incorrect
D. Statement-A is incorrect

Answer

To analyze the two statements provided in the question, we will evaluate each one separately.

### Step 1: Evaluate Statement A
- **Statement A**: "The mosses have an elaborate mechanism of spore dispersal."
- In mosses, the sporophyte is short-lived and consists of a capsule that produces spores through meiotic division. The capsule is attached to the gametophyte by a stalk. When the spores are mature, the capsule bursts, releasing the spores into the air. This process relies on air currents to disperse the spores over a distance, which can be considered an elaborate mechanism compared to simpler forms of spore dispersal found in other primitive plants.
- **Conclusion**: Statement A is true.

### Step 2: Evaluate Statement B
- **Statement B**: "Leafy stage in mosses develops from secondary protonema as an apical bud."
- In mosses, the leafy stage (the gametophyte) develops from the secondary protonema. However, this development occurs from lateral buds, not apical buds. The secondary protonema can produce lateral branches that grow into the leafy gametophyte. Therefore, the statement incorrectly describes the origin of the leafy stage.
- **Conclusion**: Statement B is false.

### Final Conclusion
- Statement A is true, while Statement B is false.

### Summary
- **Correct Answer**: Statement A is true; Statement B is false.

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