There are certain limitations of ecological pyramids correct option :-
(A) It assumes a simple food chain
(B) Saprophytes are not given any place in ecological pyramids.
(C) It does not take into account the same species belonging to
two or more trophic levels

Options

A. A, B only
B. B, C Only
C. Only B is correct
D. All the above

Answer

To solve the question regarding the limitations of ecological pyramids, we will analyze each of the given statements one by one.

### Step-by-Step Solution:

1. **Understanding Ecological Pyramids**:
- Ecological pyramids represent the distribution of biomass, numbers, or energy among trophic levels in an ecosystem. They can be pyramids of numbers, biomass, or energy.

2. **Analyzing Statement (A)**:
- **Statement**: "It assumes a simple food chain."
- **Explanation**: This statement is correct. Ecological pyramids typically represent a linear food chain and do not account for the complexity of food webs, which include multiple interconnections between species. This simplification is a limitation of ecological pyramids.

3. **Analyzing Statement (B)**:
- **Statement**: "Saprophytes are not given any place in ecological pyramids."
- **Explanation**: This statement is also correct. Saprophytes, which decompose dead organic matter, are not represented in ecological pyramids. They play a crucial role in nutrient cycling but are often overlooked in these representations, highlighting another limitation.

4. **Analyzing Statement (C)**:
- **Statement**: "It does not take into account the same species belonging to two or more trophic levels."
- **Explanation**: This statement is true as well. Many species can occupy multiple trophic levels depending on their feeding habits. For example, humans can be primary, secondary, or tertiary consumers. Ecological pyramids typically assign a species to only one trophic level, which is a limitation.

5. **Conclusion**:
- Since all three statements (A, B, and C) are correct and represent limitations of ecological pyramids, the correct answer to the question is:
- **Correct Option**: (D) All of the above.