Heterocysts present in Anabaena is specialised for

Options

A. Nitrogen fixation
B. Food storage
C. Fission
D. Sexual reproduction

Answer

**Step-by-Step Solution:**

1. **Identify the Organism**: The question refers to "Anabaena," which is a type of cyanobacteria, also known as blue-green algae.

2. **Understand Heterocysts**: Heterocysts are specialized cells found in certain cyanobacteria, including Anabaena. They play a crucial role in the organism's function.

3. **Function of Heterocysts**: The primary function of heterocysts is nitrogen fixation. This means they are responsible for converting atmospheric nitrogen (N₂) into a form that can be used by the organism (such as ammonia).

4. **Context of Nitrogen Fixation**: Nitrogen fixation is vital for the growth of plants and other organisms, as nitrogen is an essential nutrient. Anabaena, through its heterocysts, can fix nitrogen, which benefits itself and surrounding plants.

5. **Eliminate Other Options**: The other options provided (food storage, fission, and asexual reproduction) do not relate to the function of heterocysts in Anabaena. Heterocysts are specifically adapted for nitrogen fixation.

6. **Conclusion**: Therefore, the correct answer to the question is that heterocysts present in Anabaena are specialized for nitrogen fixation.

**Final Answer**: Heterocysts present in Anabaena are specialized for nitrogen fixation.

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