Growing Plants

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The best temperature for germination of a species of plant is known as the optimum temperature.

The optimum temperature is normally between 15oC and 30oC.

Slide 12

Structure of a Flower

Slide 13

Petal

Stigma

Anther

Slide 14

Petals

Stigma

Anther

Filament

Ovary

Sepals

Ovules

Nectaries

Style

Collect a cut-out flower, colour it in and put it together.

Carpelfemale parts

Stamen male parts

Slide 15

What do the parts do?

Sepals- protect the flower when it is a bud

Petals- colourful to attract the insects

Nectaries- give out sugary liquid to attract insects

Stamen- anther produces male sex cells (pollen)

Carpel- stigma traps pollen

Style is where pollen tube grows down to female sex cells.

Carpel- ovary produces female sex cells (ovules)

Slide 16

Quick Test

Why is the seed coat important?

Name the parts of the embryo plant.

Why is the food store in a seed important?

Name the three factors required for germination.

Where are a plant’s sex organs found?

Name two parts of a flower that attract insects.

Name the male part of a flower.

Which part of the flower contains ovules?

Which part of the flower produces pollen?

Which part of a flower catches pollen grains?

Slide 17

Pollination

Pollination involves the transfer of pollen (male gamete) from the anther to the stigma (outermost female part)

If it is in the same flower it is called

self-pollination.

If between different flowers it is called

cross-pollination

Plants are pollinated by insects or the wind.

Slide 18

Slide 19

Insect Pollinated Plants

Slide 20

Wind Pollinated Plants

Slide 21

Pollination Activity

Look at the Botanics Posters

Which features are from wind pollinated or insect pollinated plants?

Workbook p28

Construct a table to show the differences between insect and wind pollinated plants.

Slide 22

Pollination Summary