Give a suitable example of multinucleate condition (syncytium) in which karyokinesis is not followed by cytokinesis?

Answer

**Step-by-Step Solution:**

1. **Understanding Multinucleate Condition**:
- Multinucleate condition, also known as syncytium, refers to a cell that contains multiple nuclei within a single cytoplasmic mass. This occurs when karyokinesis (the division of the nucleus) happens without cytokinesis (the division of the cytoplasm).

2. **Defining Karyokinesis and Cytokinesis**:
- Karyokinesis is the process of nuclear division that occurs during cell division, particularly in the M phase of the cell cycle.
- Cytokinesis follows karyokinesis and involves the division of the cytoplasm, resulting in two separate daughter cells.

3. **Identifying an Example**:
- A suitable example of a multinucleate condition where karyokinesis is not followed by cytokinesis is the **endosperm of coconut**.

4. **Explaining the Example**:
- In the coconut, when the polar nuclei fuse with male gametes, they form a triploid endosperm. This endosperm provides nutrition to the developing embryo.
- During the development of the endosperm, karyokinesis occurs multiple times, leading to the formation of several nuclei within a single cell. However, cytokinesis does not occur, resulting in a multinucleate structure.

5. **Conclusion**:
- Thus, the endosperm of coconut serves as a clear example of a multinucleate condition (syncytium) where karyokinesis occurs without cytokinesis.

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