Food reserve of diatoms is

Options

A. Starch
B. Chrysolaminarin
C. Paramylon
D. Glycogen.

Answer

**Step-by-Step Solution:**

1. **Identify the Question**: The question asks for the food reserve of diatoms.

2. **Understand Diatoms**: Diatoms are a type of unicellular algae that belong to the kingdom Protista. They are known for their unique silica cell walls and are important components of aquatic ecosystems.

3. **Explore Food Reserves**: Different organisms have different types of food reserves. For example:
- Plants primarily store energy in the form of starch.
- Euglena, another type of protist, stores energy as perimylon.
- Animals store energy as glycogen.

4. **Focus on Diatoms**: Since the question specifically pertains to diatoms, we need to identify what type of food reserve they utilize.

5. **Research Food Reserve of Diatoms**: Diatoms primarily store their energy in the form of a polysaccharide known as chrysolaminarin. This is a carbohydrate that serves as a food reserve for these organisms.

6. **Conclusion**: Based on the information gathered, the food reserve of diatoms is chrysolaminarin.

**Final Answer**: The food reserve of diatoms is chrysolaminarin.

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