Yeasts grow abundantly on

Options

A. cow Dung and Cow urine
B. orgainc matter rich in sugar
C. organic matter rich in fats
D. nectar

Answer

**Step-by-Step Solution:**

1. **Understanding Yeasts**: Yeasts are unicellular eukaryotic organisms, and there are about 1500 species of yeast, primarily belonging to the phylum Ascomycota.

2. **Growth Habits of Yeasts**: Yeasts thrive in environments that are rich in organic matter, particularly those that contain high levels of carbohydrates or sugars.

3. **Identifying Suitable Substrates**: The ideal substrates for yeast growth include sugary mediums. Common examples include:
- Flour
- Nectar from flowers
- Sugary substances found in plants like sugarcane and barley

4. **Evaluating Options**: Given the options provided:
- **Cow dung or cow urine**: These are not rich in carbohydrates, making them unsuitable for yeast growth.
- **Organic matter rich in sugar**: This is a suitable substrate for yeast growth, as it aligns with their preference for carbohydrate-rich environments.
- **Organic matter rich in fats**: This is not suitable for yeast growth, as yeasts prefer sugars.
- **Nectar**: While nectar is rich in sugar, it is a specific example of organic matter rich in sugars.

5. **Conclusion**: The most appropriate answer is "organic matter rich in sugar," as it encompasses a broader range of substrates that support yeast growth.

**Final Answer**: Yeasts grow abundantly on organic matter rich in sugar.

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