1. Propagating and growing plants
Lesson 1

2. Propagation
Propagation is the process by which the supply of a type of plant is increased
There are a variety of methods to make new plants that depend on either sexual methods (seeds) or asexual methods (tissues)

3. Propagation: copy
Propagation is the way in which new plants are produced. The process can be sexual (seeds) or asexual (tissues)

4. Seeds Seeds are the product of sexual reproduction in flowering plants
Contain genetic information from each parent- seeds are genetically different to one another
Different plants produce seeds of different sizes.

5. Seeds
Seeds come in all shapes and sizes but they all have the same basic plan
Food store- provides energy for growth
Embryo- young shoot and root develops into an adult plant
Seed coat- protective layer

6. Seeds: draw and copy
Seeds are all different but all have the same parts
Structure
Function
Seed coat
Tough protective outer layer
Embryo
Shoot and root which develops into adult plant
Food Store
Starch stored for young plant to use till it can make its own

7. Sowing seeds
Very small seeds are difficult to sow individually so they are mixed with silver sand before sowing.
This makes it easier to spread them out

8. Larger seeds can be sown individually
Sowing seeds
Larger seeds can be sown individually

9. Growing plants from seeds
Germination is the start of growth in the seed. Three factors are required for successful germination:
Water - allows the seed to swell up and the embryo to start growing
Oxygen - so that energy can be released for germination
Warmth - germination improves as temperature rises (up to a maximum)

10. Growing plants from seeds
Water enters the seed through a pore- seed swells and splits
Oxygen is present in soil- needed for respiration which released food store’s energy
Light can affect germination- some need to be on soil surface to get light, some need darkness to germinate

11. Germination: copy Germination is the start of growth of the seed
Water, Oxygen and Warmth are required for germination

12. Seeds Dispersal
Plant survival depends on plants being able to spread out and colonise new places
Plant seeds can be dispersed in a number of ways: WIND, ANIMAL INTERNAL, ANIMAL EXTERNAL and EXPLOSION

13. Watch the and take notes from each of the video clips
Videos
Watch the and take notes from each of the video clips

14. Seed dispersal
What sort of features would a seed have if it were dispersed by wind?

19. Animal Internal
Brightly coloured, tasty fruits to attract the animal. The seeds are then passed through the animals body and exit elsewhere via faeces

20. Copy
Seed dispersal is the TRANSPORT of seeds AWAY from the parent plant
Plant seeds can be dispersed in a number of ways.
The methods of seed dispersal we are going to talk about are: WIND, ANIMAL INTERNAL, ANIMAL EXTERNAL and EXPLOSION