Chapter 3 ยท ICSE Class 8 Biology (Selina Concise)

Reproduction in Humans

Learn about the human reproductive systems and the basic stages of human reproduction.

๐Ÿ‘ถ Chapter 3

The stages of human development from fertilization to birth Four stages of human development shown in sequence: fertilization, zygote, embryo, and fetus, leading to birth Fertilization Zygote Embryo Fetus
3.1

Male and Female Reproductive Systems

The male reproductive system produces sperm. The female reproductive system produces eggs (ova) and supports pregnancy in the uterus.

1

Where are sperm produced in the male reproductive system?

In the testes

2

Where does a fertilised egg implant and develop in the female body?

In the uterus

3.2

Fertilisation and Development

Fertilisation occurs when a sperm fuses with an egg, forming a zygote that develops into an embryo and then a fetus in the uterus.

1

What is formed when a sperm fuses with an egg?

A zygote

2

Where does the developing embryo receive nutrients from the mother?

Through the placenta

Practice

Exercises

1. Where are sperm produced?

2. Where are eggs (ova) produced?

3. What is formed when a sperm fertilises an egg?

4. Where does a fetus develop?

5. What organ supplies nutrients to the developing fetus?

Next chapter โ€” Ecosystems ๐ŸŒ โ†’