Which of the following trophic levels are occupied by sparrow ?

Options

A. Primary consumer, primary producer
B. Secondary consumer , top carnivore
C. Primary producer, secondary consumer
D. Primary consumer, secondary consumer.

Answer

### Step-by-Step Solution:

1. **Understand Trophic Levels**:
- Trophic levels represent the position of organisms in a food chain. They are categorized as producers, primary consumers, secondary consumers, and tertiary consumers.

2. **Identify Producers**:
- The first trophic level consists of producers (autotrophs) that create their own food, such as plants. Examples include grass and trees.

3. **Identify Primary Consumers**:
- The second trophic level includes primary consumers, which are herbivores that feed on producers. An example is a grasshopper that feeds on grass.

4. **Identify Secondary Consumers**:
- The third trophic level consists of secondary consumers, which are carnivores that feed on primary consumers. Birds and fish are examples of secondary consumers.

5. **Identify Tertiary Consumers**:
- The fourth trophic level includes tertiary consumers, which are top carnivores that feed on secondary consumers. Examples include lions and humans.

6. **Determine the Role of Sparrow**:
- A sparrow is a bird that primarily feeds on seeds and insects. It does not produce food, so it cannot be a producer.

7. **Classify Sparrow**:
- Since sparrows feed on seeds and insects, they can be classified as both primary consumers (when feeding on seeds) and secondary consumers (when feeding on insects).

8. **Select the Correct Trophic Levels**:
- The correct answer is that sparrows occupy both the primary consumer and secondary consumer levels.

### Final Answer:
- The trophic levels occupied by sparrows are **Primary Consumer and Secondary Consumer**.

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