Succession on sand dune in

Options

A. Lithosere
B. psychrosere
C. psammosere
D. halosere.

Answer

**Step-by-Step Solution:**

1. **Understanding Sand Dunes**:
- Sand dunes are landforms created by the accumulation of sand particles, primarily due to wind action. They are typically found in arid or semi-arid environments.

2. **Defining Succession**:
- Succession refers to the gradual process of change in species composition of a community over time. It can occur in a specific order and is categorized into two main types: primary succession and secondary succession.

3. **Types of Succession**:
- **Primary Succession**: This occurs in lifeless areas where no soil exists, such as after a volcanic eruption or on bare rock. It involves the colonization of organisms in a previously uninhabited environment.
- **Secondary Succession**: This occurs in areas where a disturbance has destroyed an existing community but left the soil intact, such as after a forest fire or flood.

4. **Understanding Xeric and Hydric Succession**:
- Succession can also be classified based on the moisture levels of the environment.
- **Hydrosere**: Refers to succession in aquatic environments (freshwater or saltwater).
- **Xerosere**: Refers to succession in dry environments.

5. **Specific Types of Xerosere**:
- Xerosere can be further divided into:
- **Lithosere**: Succession that begins on bare rock.
- **Somocere**: Succession that begins on newly formed sand dunes.

6. **Conclusion**:
- Since sand dunes are dry environments where succession begins, the correct term for succession on sand dunes is **Somosere**.

**Final Answer**: The correct option for succession on sand dunes is **Somosere**.

---