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In oogensis, egg is fertilised by sperm ...

In oogensis, egg is fertilised by sperm at which stage?

A

Primary oocyte

B

Secondary oocyte

C

Oogonium

D

Ovum

Text Solution

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The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding Oogenesis**: Oogenesis is the process of egg formation in females. It involves several stages, starting from the formation of primary oocytes to the release of the ovum. 2. **Stages of Oogenesis**: The key stages in oogenesis include: - Primary oocyte - Secondary oocyte - Ovum (mature egg) 3. **Release of the Egg**: In humans, the egg is released from the ovary during the menstrual cycle. This released egg is in the form of a secondary oocyte. 4. **Fertilization Process**: Fertilization is the process where a sperm cell fuses with an egg (ovum) to form a zygote. This fusion occurs when the egg is in the secondary oocyte stage. 5. **Completion of Maturation**: The maturation of the secondary oocyte is completed in the fallopian tube (oviduct) after the sperm has entered the secondary oocyte. 6. **Conclusion**: Therefore, in oogenesis, the egg is fertilized by sperm at the stage of the secondary oocyte. **Final Answer**: In oogenesis, the egg is fertilized by sperm at the stage of the secondary oocyte. ---
**Step-by-Step Solution:** 1. **Understanding Oogenesis**: Oogenesis is the process of egg formation in females. It involves several stages, starting from the formation of primary oocytes to the release of the ovum. 2. **Stages of Oogenesis**: The key stages in oogenesis include: - Primary oocyte - Secondary oocyte - Ovum (mature egg) ...
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