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Plant Reproduction and Breeding

Plant Reproduction and Breeding

TOPIC 3 AND BREEDING

- people adapt to meet their needs.

- selective breeding is choosing specific plants for their special characteristics.

- the plants are cross-pollinated and their offspring inherit the characteristics of both parents. - scientists can change plants by going inside the and changing some of the genetic material

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- the part of the plant that control the characteristics is the

Asexual Reproduction ()

- one parent plant grows new plants from its , stems or .

- the young plant is identical to the parent.

Layering

- produces plants from the stems

- branch from the parent bends to the ground and covers with then grows roots.

- take a branch from one and attach it to another

Cuttings

- cut a small section of a or stem to grow a new plant

- involves two parents that produce

- plants are slightly different from the parents

- reproduce using

- helps plants adapt to changes

Cone Bearing Plants - cone contains (eggs) - male cone has () - pollen blows in the wind to female cone - egg is fertilized ina tnhde sceoende is formed Flowering Plants --Parts of the

Pollination occurs when pollen has been transferred from the anther to the . When the pollen grain germinates on the stigma it creates a burrow called the as it travels toward the .

When the sperm cell from the pollen grain reaches the ovary or the sperm joins with the egg. This is called fertilization. The fertilized will become a tiny new plant inside the seed. We call this tiny new plant the .

Fruit

- is the growing ovary of the plant

- protects the seeds of the plant until they are ripe Read page 127 and describe the six ways plants can disperse seeds.

1.

2.

3.

4.

5.

6.

Germination

- the development of the seed into a plant