Term homeostasis in an ecosystem refers to -

Options

A. Self regulatory mechanism
B. Feed back mechanism
C. Influence of productivity
D. State of equilibrium

Answer

**Step-by-Step Solution:**

1. **Understanding Homeostasis**: The term "homeostasis" refers to the ability of an organism or a system to maintain a stable internal environment despite external changes. In the context of ecosystems, it describes how different components interact to maintain balance.

2. **Equilibrium in Ecosystems**: In an ecosystem, homeostasis is achieved when various biotic (living) and abiotic (non-living) factors are in balance. This equilibrium allows the ecosystem to function effectively and sustain life.

3. **Regulators vs. Conformers**:
- **Regulators**: These are organisms that can maintain their internal environment regardless of external conditions. For example, birds and mammals can regulate their body temperature.
- **Conformers**: These organisms cannot regulate their internal environment and instead conform to the external conditions. Most invertebrates fall into this category.

4. **Examples of Homeostasis**:
- In humans, homeostasis is demonstrated through mechanisms like shivering in cold temperatures to generate heat and sweating in hot temperatures to cool down.
- In ecosystems, homeostasis can be seen in the balance of predator-prey relationships, nutrient cycling, and energy flow.

5. **Conclusion**: Therefore, in an ecosystem, homeostasis refers to a state of equilibrium where various factors are balanced, allowing for the sustainability of the ecosystem.

**Final Answer**: Homeostasis in an ecosystem refers to a state of equilibrium.

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