Stored food in brown algae is/are :-

Options

A. Glycogen and oil
B. Laminarin and mannitol
C. Floridean starch
D. Cellulose

Answer

**Step-by-Step Solution:**

1. **Identify the Organism**: The question asks about the stored food in brown algae. Brown algae belong to the group known as Phaeophyceae.

2. **Understand the Storage Compounds**: In various organisms, different compounds are used for storing food. For example, animals typically store energy as glycogen, while plants often use starch.

3. **Review the Options**: The options given are:
- Glycogen and oil
- Laminarin and mannitol
- Floridian starch
- Starch
- Cellulose

4. **Analyze Each Option**:
- **Glycogen and oil**: Glycogen is primarily found in animals, not in brown algae.
- **Laminarin and mannitol**: Laminarin is a polysaccharide found in brown algae, and mannitol is a sugar alcohol that also serves as a storage compound in these organisms.
- **Floridian starch**: This is the storage form of energy in red algae, not brown algae.
- **Starch**: While starch is a common storage polysaccharide in plants, it is not the primary storage compound in brown algae.
- **Cellulose**: This is a structural component of cell walls in plants and is not a storage form of food.

5. **Conclusion**: Based on the analysis, the correct answer is **laminarin and mannitol**, as these are the primary storage compounds found in brown algae.

**Final Answer**: The stored food in brown algae is laminarin and mannitol.

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