CHAPTER 38 PLANT REPRODUCTION Angiosperm Reproduction & Biotechnology.
Reproduction
-
Upload
lila-hendrix -
Category
Documents
-
view
24 -
download
0
description
Transcript of Reproduction
ReproductionS1 Science
Revision
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.
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:
The animal cell
Nucleus Cell Membrane
Cytoplasm
The plant cell
Cell Membrane
Vacuole
Cell Wall
Nucleus
Chloroplast
Cytoplasm
Functions of the cell parts
Cell part Function
Cell wall
Cell membrane
Vacuole
Nucleus
Cytoplasm
Chloroplasts
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
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 s u e s
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.
Human Reproduction continued
The female reproductive system
oviduct
ovary
uterusvagina
Carries the ovum to the uterus
Makes the ova
Will contain the growing embryo
Receives sperm from the penis
The male reproductive system
sperm tube
Carries the sperm to the penis
penis
testes
Creates the sperm
Delivers sperm to the vagina
Fertilisation
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 _ _ _ _ _ _.
o v i d u c t
s p e r m o v u m
z y g o t e
b a l l c e l l se m b r y o
Pregnancy
Uterus wall
Placenta
Umbilical cord
Amnion
Protects the embryo
Joins the embryo to the placenta
Allows food and oxygen to pass to the embryo
Contains the embryo
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.
Plant reproductionYou’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:
Parts of a flower
stigma
style
petalanther
ovary
The functions of the parts
Part Function
stigma
style
ovary
petal
anther
Receives the pollen
Positions the stigma
Creates the ovules
Attracts insects
Creates the pollen
PollinationThere 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.
w i n d i n s e c t
b r i g h t l ys m a l l
i n s i d e
d u l l f e a t h e r y
o u t s i d e
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 _ _ _ _ _.
p o l l e n
o v u l e
p o l l e n t u b e
z y g o t es e e d
f r u i t
Seed dispersal
Seed Dispersed by? Why?
Animals (internal)
Fruit is eaten by animals.
Animals (external)
Hooks catch onto fur.
Seed catches the wind.
Wind.