Mark the odd one (w.r.t second trophic level)

Options

A. Wolf
B. Grasshopper
C. Cow
D. Zooplanktons

Answer

**Step-by-Step Solution:**

1. **Identify the Trophic Levels:**
- Trophic levels are the positions that organisms occupy in a food chain, which is typically divided into producers (first trophic level), herbivores (second trophic level), and carnivores (third trophic level).

2. **Analyze Each Option:**
- **Wolf:**
- The wolf is a carnivore that feeds on herbivores (like cows or grasshoppers). Therefore, it occupies the third trophic level.
- **Grasshopper:**
- The grasshopper feeds on plants (producers) and is classified as a herbivore. Thus, it is at the second trophic level.
- **Cow:**
- The cow also feeds on grass (producers) and is a herbivore, placing it at the second trophic level.
- **Zooplankton:**
- Zooplankton feed on phytoplankton (producers) and are considered herbivores as well, which means they are at the second trophic level.

3. **Compare the Trophic Levels:**
- Grasshopper: Second trophic level
- Cow: Second trophic level
- Zooplankton: Second trophic level
- Wolf: Third trophic level

4. **Identify the Odd One Out:**
- Since the wolf is the only organism that occupies the third trophic level, while the other three (grasshopper, cow, and zooplankton) are all at the second trophic level, the wolf is the odd one out.

5. **Conclusion:**
- The answer is the wolf, as it is the only organism in the list that does not belong to the second trophic level.

**Final Answer:**
- The odd one out with respect to the second trophic level is **Wolf**.

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