What is the diagrammatic representation of the flow of energy from one trophic level to another known as?

Options

A. Food chain
B. Food web
C. Ecological pyramid
D. Both (a) and (c)

Explanation

To answer the question, "What is the diagrammatic representation of the flow of energy from one trophic level to another known as?", we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Trophic Levels**:
- Trophic levels refer to the different levels in a food chain or food web, where organisms are categorized based on their source of energy. The primary producers are at the first trophic level, followed by primary consumers, secondary consumers, and so on.

2. **Identifying Diagrammatic Representations**:
- There are several ways to represent the flow of energy in an ecosystem, including food chains, food webs, and ecological pyramids.

3. **Defining Ecological Pyramid**:
- An ecological pyramid is a graphical representation that shows the relationship between different trophic levels in terms of energy, biomass, or number of organisms. It visually represents how energy flows from one level to another.

4. **Analyzing the Options**:
- The options given are:
- A) Food Chain
- B) Food Web
- C) Ecological Pyramid
- D) Both A and C
- While food chains and food webs illustrate the flow of energy, the specific term for the diagrammatic representation of energy flow across trophic levels is the ecological pyramid.

5. **Conclusion**:
- Based on the definitions and analysis, the correct answer to the question is **Ecological Pyramid**.

### Final Answer:
The diagrammatic representation of the flow of energy from one trophic level to another is known as an **Ecological Pyramid**.