Vocabulary Unit2 Nat.Sci.

1. Reproduction: The process by which living organisms produce offspring of the same kind.

2. Fertilization: The union of an egg cell and a sperm cell to form a new individual.

3. Gametes: The sex cells (sperm in males and eggs in females) that are involved in sexual reproduction.

4. Puberty: The stage of development when a person's body undergoes changes that enable sexual reproduction.

5. Hormones: Chemical substances produced by the body that regulate various functions and processes, including reproduction.

6. Menstruation: The monthly discharge of blood and tissue from the uterus in females who have reached puberty and are not pregnant.

7. Ovulation: The release of a mature egg from the ovary during a woman's menstrual cycle.

8. Sperm: The male reproductive cells that are capable of fertilizing an egg.

9. Egg: The female reproductive cell that can be fertilized by sperm to create a new individual.

10. Uterus: The organ in females where a fertilized egg implants and develops into a fetus.

11. Embryo: The stage of development after fertilization when the fertilized egg begins to divide and grow.

12. Placenta: An organ that develops during pregnancy and provides oxygen and nutrients to the fetus while removing waste products.

13. Testes: The male reproductive organs that produce sperm and testosterone.

14. Ovaries: The female reproductive organs that produce eggs and female sex hormones.

15. Conception: The moment when sperm fertilizes an egg and pregnancy begins.