- What is the process of fusion of male and female gametes called?
Answer: Fertilisation
Fertilisation is the process in which the sperm from the male and the egg from the female fuse to form a zygote.
- What is the cell formed immediately after fertilisation?
Answer: Zygote
The fusion of sperm and egg results in the formation of a single-cell structure called a zygote.
- Fertilisation that occurs inside the female body is called?
Answer: Internal
Internal fertilisation takes place within the female body, as seen in humans, cows, and dogs.
- What kind of fertilisation occurs in frogs and fish?
Answer: External
External fertilisation occurs outside the female body, often in water, as seen in frogs, fish, and starfish.
- What structure does the zygote develop into after repeated division?
Answer: Embryo
The zygote undergoes multiple divisions to become an embryo before implanting into the uterus.
- In which organ does the embryo embed for further development?
Answer: Uterus
After fertilisation, the embryo embeds in the uterus for continued growth and development.
- What is the stage called when all body parts of the embryo become identifiable?
Answer: Foetus
When an embryo develops recognizable body parts, it is called a foetus.
- What term describes animals like humans and cows that give birth to young ones?
Answer: Viviparous
Viviparous animals give birth to live young rather than laying eggs.
- What term describes animals like frogs and hens that lay eggs?
Answer: Oviparous
Oviparous animals lay eggs, which later hatch into young ones.
- What kind of fertilisation is done outside the human body in special medical cases?
Answer: IVF
In vitro fertilisation (IVF) is the process where sperm and egg are fused outside the body to assist reproduction.
