Hydrarch succession and Xerarch succession doesn't differ in

Options

A. Pioneer species .
B. Seral stages .
C. Climax community .
D. area where succession begins.

Answer

To solve the question regarding the differences between Hydrarch and Xerarch succession, we need to analyze the options provided and understand the concepts of both types of ecological succession.

### Step-by-Step Solution:

1. **Understanding Hydrarch and Xerarch Succession**:
- **Hydrarch Succession**: This type of succession occurs in wet environments, such as ponds or marshes, where the ecosystem gradually transitions from aquatic to terrestrial.
- **Xerarch Succession**: This type occurs in dry environments, such as deserts or rocky areas, where the ecosystem transitions from bare rock or dry soil to a more complex community.

2. **Analyzing the Options**:
- **a. Pioneer species**: The first species to colonize an area are called pioneer species. These species differ between Hydrarch and Xerarch because they are adapted to their specific environments (e.g., algae in Hydrarch and lichens in Xerarch).
- **b. Serial stages**: The stages of succession (or seral stages) also differ between the two types of succession due to the different environmental conditions and species involved.
- **c. Climax community**: The climax community represents the final stable community that results from succession. Despite the different pathways, both Hydrarch and Xerarch succession can lead to similar climax communities, often characterized by a stable and mature ecosystem.
- **d. Area where succession begins**: The areas differ as Hydrarch begins in wet areas and Xerarch begins in dry areas.

3. **Conclusion**:
- The only aspect that does not differ between Hydrarch and Xerarch succession is the **climax community** (option c). Both types of succession can ultimately lead to a similar climax community, despite the different conditions and species involved during the earlier stages of succession.

### Final Answer:
The correct answer is **c. Climax community**.