Which of the following is secondary production in an ecosystem ?

Options

A. Grass
B. Goat
C. Lion
D. None of these

Answer

To determine which of the following is secondary production in an ecosystem, we need to understand the concept of secondary production.

### Step-by-Step Solution:

1. **Understanding Secondary Production**:
- Secondary production refers to the generation of biomass by heterotrophic organisms (consumers) in an ecosystem. This includes animals that consume the primary producers (plants) and convert that energy into their own biomass.

2. **Analyzing the Options**:
- We need to evaluate each option to see if it represents secondary production.

3. **Option 1: Grass**:
- Grass is a primary producer. It uses photosynthesis to convert sunlight into energy, thus generating its own biomass. Therefore, this option does not represent secondary production.
- **Conclusion**: This option is incorrect.

4. **Option 2: Goat**:
- A goat is a herbivore that consumes grass (a primary producer). It converts the energy from the grass into its own biomass. Thus, the goat represents secondary production in the ecosystem.
- **Conclusion**: This option is correct.

5. **Option 3: Lion**:
- A lion is a carnivore that feeds on other animals. While it is a consumer, it does not represent secondary production in the context of the question since it is not directly generating biomass from primary producers; it is a tertiary consumer.
- **Conclusion**: This option is incorrect.

6. **Option 4: None of these**:
- Since we have identified that the goat is indeed a secondary producer, this option is also incorrect.
- **Conclusion**: This option is incorrect.

7. **Final Answer**:
- Based on the analysis, the correct answer is **Option 2: Goat**.