Autecology is the

Options

A. relation of hetergenous population to its environment
B. relation of an individual to its environment
C. relation of a community to its environment
D. relation of a biome to its environment.

Explanation

**Step-by-Step Solution:**

1. **Understanding Ecology**: Begin by defining ecology as the study of interactions among living organisms and between organisms and their environment. This includes both biotic (living) and abiotic (non-living) components.

2. **Defining Autecology**: Autecology is a specific branch of ecology that focuses on the interactions of a single organism or a population of organisms with their environment. It examines how these organisms relate to both biotic and abiotic factors.

3. **Individual vs. Population Study**: Autecology can be studied at both the individual level (one organism) and the population level (a group of the same species). This means that both levels of study are valid in the context of autecology.

4. **Evaluating Options**: Analyze the provided options:
- **Option A**: Relation of a heterogeneous population to its environment - This is a correct description of autecology.
- **Option B**: Relation of an individual to its environment - This is also a correct description of autecology.
- **Option C**: Relation of community to its environment - This is incorrect, as it refers to a larger group than what autecology studies.
- **Option D**: Relation of biome to its environment - This is also incorrect for the same reason as option C.

5. **Conclusion**: Based on the analysis, options A and B correctly describe autecology, while options C and D do not.

**Final Answer**: Autecology is the study of the relationship of a single organism or a population of organisms with their environment.

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