In ecological succession from pioneer to climax stage, the biomass shall

Options

A. Increase continuously
B. Decrease
C. Increase and then decrease
D. No relation

Answer

**Step-by-Step Solution:**

1. **Understanding Ecological Succession**:
- Ecological succession is the process by which ecosystems change and develop over time. It typically starts with a pioneer community and progresses to a climax community.

2. **Defining Pioneer and Climax Communities**:
- The **pioneer community** is the first group of organisms to colonize a barren or disturbed area. These organisms are usually hardy and can survive in harsh conditions.
- The **climax community** is the final, stable community that forms after a series of ecological changes. It is characterized by a diverse array of organisms and a balanced ecosystem.

3. **Analyzing Biomass Changes**:
- Biomass refers to the total mass of living organisms in a given area. In the context of ecological succession:
- In the pioneer stage, the biomass is relatively low because there are fewer organisms.
- As succession progresses, more species invade and establish themselves, leading to an increase in the number of organisms and, consequently, an increase in biomass.

4. **Conclusion on Biomass Trends**:
- As the ecosystem transitions from the pioneer stage to the climax stage, the biomass will increase continuously. This is because more organisms contribute to the overall biomass as the community becomes more complex and diverse.

5. **Selecting the Correct Option**:
- Given the options:
- Increase continuously
- Decrease
- Increase and then decrease
- No relation
- The correct answer is **"increase continuously"**.