The energy and biomass relationship between the organisms at different trophic levels can better expressed by

Options

A. food chain
B. food web
C. ecological pyramids
D. energy cycle.

Answer

To solve the question regarding the energy and biomass relationship between organisms at different trophic levels, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Terms**:
- **Food Chain**: A linear sequence showing how energy and nutrients flow from one organism to another.
- **Food Web**: A complex network of interconnected food chains, illustrating the various pathways through which energy and nutrients circulate in an ecosystem.
- **Ecological Pyramid**: A graphical representation that shows the relationship between energy, biomass, and the number of organisms at different trophic levels.
- **Energy Cycle**: Refers to the flow of energy through the ecosystem, including processes like photosynthesis and respiration.

2. **Analyze the Question**:
- The question specifically asks for a term that best expresses the relationship between energy and biomass at different trophic levels.

3. **Evaluate Each Option**:
- **Food Chain**: While it shows energy flow, it does not explicitly represent biomass.
- **Food Web**: Similar to the food chain, it illustrates connections but lacks a clear representation of energy and biomass.
- **Ecological Pyramid**: This option visually represents the distribution of energy and biomass at each trophic level, making it the most suitable choice.
- **Energy Cycle**: This term describes energy flow but does not focus on biomass.

4. **Select the Best Answer**:
- Based on the evaluation, the **Ecological Pyramid** is the best term to express the energy and biomass relationship between organisms at different trophic levels.

### Final Answer:
The energy and biomass relationship between the organisms at different trophic levels can better be expressed by the **Ecological Pyramid**.