After fertilisation, the resulting cell which gives rise to a new individual is the

Options

A. embryo
B. ovum
C. foetus
D. zygote

Answer

**Step-by-Step Solution:**

1. **Understanding Fertilization**: Fertilization is the process where the male sperm cell fuses with the female egg cell (ovum). This fusion creates a new cell.

2. **Identifying the Resulting Cell**: After fertilization, the resulting cell that forms is crucial for the development of a new individual. This cell undergoes several divisions and changes to eventually develop into a fully formed organism.

3. **Options Analysis**:
- **Embryo**: This term refers to the early stage of development that occurs after the zygote has begun to divide. Therefore, it is not the immediate result of fertilization.
- **Ovum**: This is the female reproductive cell. It is not the resulting cell after fertilization; it is one of the cells that fuse during fertilization.
- **Fetus**: This term describes an unborn baby at a later stage of development, after the embryo stage. It is not the immediate result of fertilization.
- **Zygote**: This is the correct term for the resulting cell after the sperm and egg have fused. The zygote is the first cell of a new individual.

4. **Conclusion**: The resulting cell after fertilization that gives rise to a new individual is called a **Zygote**.

**Final Answer**: Zygote

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