Reason of diversity in living being is due to

Options

A. Mutation
B. Long term evolutionary change
C. Gradual Change
D. Short term evolutionary change

Answer

To determine the reason for biodiversity in living beings, we can analyze the options provided step by step:

### Step 1: Understand the Concept of Biodiversity
Biodiversity refers to the variety of life forms on Earth, including the different species, genetic variations, and ecosystems. It is essential for ecosystem stability and resilience.

### Step 2: Evaluate the Options
1. **Mutation**:
- Mutations are changes in the DNA sequence of an organism. While they can introduce new traits, they are not the primary reason for the vast diversity we observe over long periods. They are more of a source of variation rather than a direct cause of biodiversity.

2. **Long-term Evolutionary Change**:
- This option refers to the gradual changes that occur in species over extended periods due to natural selection, genetic drift, and other evolutionary processes. This is the correct answer, as long-term evolutionary changes lead to the formation of new species and adaptations, contributing significantly to biodiversity.

3. **Gradual Change**:
- This option is vague and does not specifically address the mechanisms that drive biodiversity. While gradual changes can occur, they are not sufficient to explain the diversity observed in living beings.

4. **Short-term Evolutionary Change**:
- Short-term changes may occur due to environmental pressures or adaptations, but they do not account for the extensive diversity seen across different species over geological time scales.

### Step 3: Conclusion
Based on the analysis, the correct answer to the question "Reason of diversity in living beings is due to" is **Long-term Evolutionary Change**.