Silicon is present in large quantity in some members of

Options

A. Monera
B. Gramineae
C. Thallophyta
D. Bryophyta

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the presence of silicon in large quantities in certain members of a specific group of organisms.

2. **Identifying the Groups**: The options provided include Monera, Gramineae, Thallophyta, and Bryophyta. We need to evaluate which of these groups is known to have a significant amount of silicon.

3. **Analyzing Monera**: Monera consists of prokaryotic organisms, such as bacteria. These organisms do not require silicon in large quantities, so they can be eliminated as an option.

4. **Analyzing Gramineae**: Gramineae, also known as the Poaceae family, includes cereal plants like rice, wheat, and corn. These plants are known to accumulate silicon, which helps them in stress conditions such as drought and enhances their growth and production rates.

5. **Analyzing Thallophyta**: Thallophyta includes lower plants like algae and fungi. These organisms do not have a significant requirement for silicon, so they can also be eliminated.

6. **Analyzing Bryophyta**: Bryophyta includes mosses and liverworts, which are also lower plants. Similar to Thallophyta, they do not require silicon in large quantities.

7. **Conclusion**: After analyzing all the options, it is clear that Gramineae (the Poaceae family) is the correct answer, as these plants are known to have a large quantity of silicon.

**Final Answer**: Silicon is present in large quantity in some members of Gramineae.

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