Embryo is also called foetus after :-

Options

A. 8 weeks
B. 9 month
C. 4 month
D. 3 weeks

Answer

### Step-by-Step Solution:

1. **Understanding the Stages of Development**:
- The development of a human embryo begins with fertilization, leading to the formation of a zygote. This zygote undergoes cleavage, resulting in multiple cell divisions.

2. **Formation of the Embryo**:
- After several rounds of cell division, the zygote forms a multicellular structure. At this stage, it is referred to as an embryo.

3. **Duration of the Embryonic Stage**:
- The embryo stage lasts for about 8 weeks (or 2 months) after fertilization. During this time, the basic structures of the body begin to form.

4. **Transition to Fetus**:
- After 8 weeks of development, the embryo undergoes significant changes. At this point, it is referred to as a fetus.

5. **Developmental Changes**:
- During the fetal stage, more complex structures develop, including the heart, lungs, and limbs. The placenta also begins to form, supporting the growing fetus.

6. **Conclusion**:
- Therefore, the embryo is called a fetus after 8 weeks of gestation.

### Final Answer:
The embryo is also called a fetus after 8 weeks of development.

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