Which of the following is a primary consumer in maize field ecosystem ?

Options

A. Lion
B. Grasshopper
C. Wolf
D. Phytoplankton

Answer

To determine the primary consumer in a maize field ecosystem, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Ecosystem**: The question pertains to a maize field ecosystem, which is a type of terrestrial ecosystem. In this ecosystem, we need to identify the primary consumers.

2. **Identify the Trophic Levels**: In any ecosystem, organisms are categorized into different trophic levels:
- **Producers**: These are typically plants that produce their own food through photosynthesis. In a maize field, maize plants are the producers.
- **Primary Consumers**: These are herbivores that feed on the producers. They are the first level of consumers in the food chain.
- **Secondary and Tertiary Consumers**: These are carnivores that feed on herbivores and other carnivores, respectively.

3. **Analyze the Options**: The options given are:
- Lion
- Grasshopper
- Wolf
- Phytoplankton

4. **Eliminate Non-Herbivores**:
- **Lion**: This is a carnivore and does not feed on plants, so it cannot be a primary consumer.
- **Wolf**: Similar to the lion, the wolf is also a carnivore and feeds on herbivores, thus it is not a primary consumer.
- **Phytoplankton**: These are aquatic organisms and are not part of a terrestrial ecosystem like a maize field, so they can be eliminated.

5. **Identify the Primary Consumer**: The only option left is the **Grasshopper**. Grasshoppers are herbivores that feed on plants, making them primary consumers in the maize field ecosystem.

### Conclusion:
The primary consumer in a maize field ecosystem is the **Grasshopper**.

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