Reproduction

1. Reproduction S1 Science Revision

2. The Course • This course is made up of three sections: • Cells – the structure of plant and animal cells • Human reproduction • Plant reproduction • The test will cover all three sections.

3. Part 1: Cells • You’ll have to know: • The parts of an animal cell • The parts of a plant cell • The function of each part • You should be able to:

4. The animal cell Nucleus Cell Membrane Cytoplasm

5. The plant cell Nucleus Cell Membrane Chloroplast Vacuole Cytoplasm Cell Wall

6. Functions of the cell parts Maintains shape of cell Allows substances to enter and leave the cell. Contains cell sap and water Controls what happens in the cell. Is the site of cell reactions Contains green chlorophyll for making food

7. Groups of cells • Groups of cells that do the same job are called _ _ _ _ _ _ _ • Take five minutes to do the revision exercise on cells. If you’ve done it already, learn the parts and their functions! t i s sues

8. Human Reproduction • You’ll have to know: • How to label the parts of the male and female reproductive organs • What the different parts do in these systems • What happens at fertilisation • How to label parts of the foetus and the uterus during pregnancy • What the different parts do.

9. Human Reproduction continued • You should be able to • and

10. The female reproductive system oviduct Carries the ovum to the uterus ovary Makes the ova vagina uterus Receives sperm from the penis Will contain the growing embryo

11. The male reproductive system sperm tube Carries the sperm to the penis penis Delivers sperm to the vagina testes Creates the sperm

12. Fertilisation ovid uct • Fertilisation occurs in the _ _ _ _ _ _ _ when the _ _ _ _ _ and the _ _ _ _ meet. • The fertilised ovum is called a _ _ _ _ _ _. • As it travels to the uterus, it continues to divide until it’s a _ _ _ _ of _ _ _ _ _ called an _ _ _ _ _ _. spe rm o vum z y g o t e c e ll s b a ll emb r yo

13. Pregnancy Uterus wall Contains the embryo Placenta Allows food and oxygen to pass to the embryo Umbilical cord Joins the embryo to the placenta Amnion Protects the embryo

14. Human reproduction • Take ten minutes to complete the revision exercises in your workbook. If you don’t finish them you can do them at home.

15. Plant reproduction • You’ll have to know: • How to label the parts of a flower • What the functions of the parts are • A bit about wind and insect pollination • Fertilisation in plants • How seeds are dispersed. • You should be able to:

16. Parts of a flower petal stigma anther style ovary

17. The functions of the parts Receives the pollen Positions the stigma Creates the ovules Attracts insects Creates the pollen

18. Pollination w i nd i nsec t • There are two types of pollination: _ _ _ _ and _ _ _ _ _ _. • Insect pollinated plants have _ _ _ _ _ _ _ _ coloured petals and a sweet smell. Their stigma is _ _ _ _ _ and the anthers are _ _ _ _ _ _ the flower. • Wind pollinated plants have small, _ _ _ _ petals and _ _ _ _ _ _ _ _ stigmas. They have no scent and the anthers hang _ _ _ _ _ _ _ the flower. br i gh t l y smal l i ns i de f eat hery du l l ou t s i de

19. Fertilisation • The male sex cell in plants is the _ _ _ _ _ _ and the female sex cell is the _ _ _ _ _. • When the pollen lands on the stigma it forms a _ _ _ _ _ _ _ _ _ _ to take the pollen to the ovary. • The fertilised ovule or _ _ _ _ _ _ becomes the _ _ _ _. The ovary becomes a _ _ _ _ _. po ll en ovul e po llen t ube zygot e seed f r u i t

20. Seed dispersal Fruit is eaten by animals. Animals (internal) Animals (external) Hooks catch onto fur. Seed catches the wind. Wind.