Which of the following occur at the same trophic level ?

Options

A. Deer and Bee
B. Cow and Crow
C. Earthworm and Frog
D. Snake and Vulture

Answer

To determine which of the given pairs of organisms occur at the same trophic level, we need to analyze the trophic levels of each organism mentioned in the options.

### Step-by-Step Solution:

1. **Identify Trophic Levels**:
- Trophic levels are categorized as follows:
- T1: Producers (e.g., plants)
- T2: Primary consumers (e.g., herbivores)
- T3: Secondary consumers (e.g., carnivores that eat herbivores)
- T4: Tertiary consumers (e.g., carnivores that eat other carnivores)
- Decomposers (e.g., earthworms) do not have a specific trophic level.

2. **Analyze Each Option**:
- **Option A: Deer and Bee**
- Deer is a primary consumer (T2).
- Bee is also a primary consumer (T2) as it feeds on plants.
- **Conclusion**: Both are at T2.

- **Option B: Cow and Crow**
- Cow is a primary consumer (T2).
- Crow is a secondary consumer (T3) as it eats the cow.
- **Conclusion**: They are not at the same trophic level.

- **Option C: Earthworm and Frog**
- Earthworm is a decomposer (no specific trophic level).
- Frog is a secondary consumer (T3).
- **Conclusion**: They are not at the same trophic level.

- **Option D: Snake and Vulture**
- Snake is a tertiary consumer (T4).
- Vulture is a quaternary consumer (T5).
- **Conclusion**: They are not at the same trophic level.

3. **Final Conclusion**:
- The only pair that occurs at the same trophic level is **Deer and Bee**, both at T2.

### Answer:
The organisms that occur at the same trophic level are **Deer and Bee** (T2).