Seed formation and seed dispersal | Science | Quizalize & Oak National Academy

Starter quiz

Which part of the plant is a flower?

A ✓

B

C

D
Which part of the plant is needed for reproduction (making more plants)?

roots

leaves

stem

flowers ✓
Match the part of the flower to the correct name.

A

⇔

ovary ✓

B

⇔

petal ✓

C

⇔

stigma ✓

D

⇔

anther ✓
What is pollen?

a fine powder held on the anthers of a flower ✓

tiny seeds that are formed inside flowers

a type of nutrient that plants absorb from the soil
Pollination is when pollen from a male anther lands on the female ______ of a plant.

'stigma' ✓
How is pollen transferred from the anthers of a flower to a stigma for pollination?

It can be transported through the stem.

It can be moved by animals. ✓

It can be blown by the wind. ✓

It can be pushed by the leaves of a plant.

Exit quiz

Put the steps of plant reproduction into the correct order.

1

⇔

A flower is pollinated by animals or the wind.

2

⇔

The flower is fertilised when pollen moves to the flower's ovary.

3

⇔

Seeds are formed inside the ovary.

4

⇔

Seeds are dispersed.
What is fertilisation?

when pollen lands on a sticky stigma

when animals move pollen from one flower to another

when pollen reaches the ovary of a flower ✓
When a plant has been fertilised, ______ formation happens inside the ovary.

'seed' ✓
What is seed dispersal?

when seeds are spread away from their parent plant ✓

when seeds are formed inside the ovary

when seeds are transferred from one flower to another by insects
Which of these is not a way that plants disperse their seeds?

eaten or carried by animals

sinking through the roots ✓

blown by the wind

floating on water

exploding from seed pods
Why are plant seeds dispersed?

so they will pollinate other flowers

so they will be able to feed more animals

so they won’t have to compete with each other for the things they need ✓

Worksheet

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Lesson Details

Key learning points

Fertilisation occurs when pollen reaches the ovary of another flower.
A seed is formed once a plant has been fertilised.
Seed dispersal allows plants to spread out and avoid competing with one another for the same resources.
Seeds can be scattered by wind, water, animals or explosion. This is called seed dispersal.

Common misconception

Pupils may confuse pollen and seeds or think that pollen that is dispersed by the wind can grow into a new plant if it lands on soil.

Explain that pollen is different from seeds as pollen cannot grow into a new plant. It plays a part in fertilisation, which leads to seed formation, but is not a seed and cannot turn into seeds.

Keywords

Pollination - Pollination is when pollen from a male anther is transferred to the female stigma of a flower.
Ovary - Seeds are formed inside the ovary of a flower.
Fertilisation - Fertilisation happens when pollen from a male anther reaches a female ovary in a flower.
Seed formation - Seed formation happens inside flowers after a plant has been fertilised.
Seed dispersal - Seed dispersal is the way seeds are spread out from their parent plant.