Plant Reproduction – Outcomes Distinguish between asexual and sexual reproduction in

plants.

Describe a way in which a named plant can reproduce

asexually.

Locate the sepals, petals, carpel, and stamen.

HL: Identify the stigma, style, ovary, anther, and filament.

Give the function of the stamen, carpel, pollen, and

ovary.

Describe the life cycle of a flowering plant.

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Plant Reproduction – Outcomes HL: Describe seed structure.

Understand that seed germination is necessary to

produce a new plant.

Investigate the conditions necessary for germination.

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Distinguish Between Asexual and

Sexual Reproduction

Sexual reproduction requires a male sex cell from one

plant to fertilise a female sex cell of another plant.

Sexual reproduction requires two parents.

Asexual reproduction involves the formation of new

individuals from the cell(s) of a single parent.

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Describe Asexual ReproductionGrass, potatoes,

strawberries, onions, and

crocuses are all examples

of plants that reproduce

asexually.

Potatoes, for example

produce tubers which

grow new potatoes after

the existing ones are

harvested or die.

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Locate Plant Parts5

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Locate Plant Parts Petals attract insects to the flower by being colourful

and in some cases, scented.

Sepals protect the flower while it is growing. They may

also help to attract insects by being colourful.

Stamens produce sperm, the male sex cell / gamete.

Carpels produce eggs / ova, the female sex cell /

gamete.

Plants have both male and female parts!

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HL: Identify Reproductive Plant Parts7

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Give Function of Plant Parts The stamen consists of the anther and filament.

Anthers produce pollen, which contains the sperm.

Filaments raise the anthers up so visiting insects and wind

pick up the pollen.

The carpel consists of the ovary, stigma, and style.

Ovaries produce the eggs / ova.

Stigma catch pollen from visiting insects and wind.

Styles connect stigma to ovary.

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Describe the Life Cycle of Flowering Plants

Flowering plants have five stages of life.

1. Pollination

2. Fertilisation

3. Fruit and seed development

4. Dispersal

5. Germination

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Describe Pollination Pollination is the transfer of pollen grains from an anther

(male part) to a stigma (female part).

Insects may visit the flower to collect nectar, then the

anther rubs pollen onto the insect.

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Wind may blow pollen

from one flower to

another.

Self-pollination may occur

when the male and

female parts of a flower

mature at the same time

and pollen falls from the

anther to the stigma.

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Describe Fertilisation Fertilisation is the union of the pollen grain with the

nucleus of the egg.

Pollen on a stigma produces a tube reaching down

through the style, into the ovary.

The nucleus in the pollen travels down this tube to reach

the egg nucleus.

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Describe Fruit and Seed Development A fertilised egg will grow to form a seed.

The parent plant provides the seed with food, energy,

and nutrients that will enable it to grow later.

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Describe Dispersal Seeds must be dispersed so they don’t compete with

each other or the parent plant.

Seeds may be dispersed by wind, animal, water, or

explosion.

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Dispersal Method Example Plant Feature

Wind Dandelion Light seeds with

wings or hairs

Animal Berries, goosegrass Tasty or hooked

Water Water lily,

mangrove

Float

Explosion / self Peas, sandbox Pods explode

Describe GerminationGermination is the growth of a seed into a new plant.

Seeds need water, oxygen, and warmth to germinate.

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Investigate Germination1. Set up four test tubes with some cotton wool and seeds.

2. Boil and cool some water, then add it to one test tube.

3. Add a layer of oil to the test tube.

4. Add tap water to two test tubes.

5. Leave one water test tube in a fridge.

6. Only the test tube with tap water at room temperature

germinated.

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