pollination is a very important part of the lifecycle do you know · pdf file ·...

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Understanding the Lifecycle of Flowering PlantsUnderstanding the Lifecycle of Flowering PlantsUnderstanding the Lifecycle of Flowering PlantsUnderstanding the Lifecycle of Flowering Plants


Plants can only produce seeds if pollination pollination pollination pollination happens.

If pollination doesn’t take place, no other plants will be made.

SAMPLE SLIDEwww.ks1resources.co.uk

Pollination is a very important part of the lifecycle of plants. Can you remember what pollination is Can you remember what pollination is Can you remember what pollination is Can you remember what pollination is and why itand why itand why itand why it’’’’s important?s important?s important?s important?

Horse Chestnut


Do you know how the different Do you know how the different Do you know how the different Do you know how the different parts of a flower are involved parts of a flower are involved parts of a flower are involved parts of a flower are involved

in making new plants? in making new plants? in making new plants? in making new plants? SAMPLE SLIDE


anther

filament

ovule

nectary

ovary

stigma

These are the main These are the main These are the main These are the main parts of a flower.parts of a flower.parts of a flower.parts of a flower.

Stamen: the male part of the flower which is made up of the filament and the anther.

Anther: the part that makes the pollen

Filament: holds the anther up

Nectary: the part of the flower that produces a sugary nectar to attract insects.

Pistil (Carpel): the female part of the flower that is made up of the stigma, style and ovary.

Ovary: contains the ovules which develop into seeds once they are fertilised.

Stigma: the sticky end of the carpel, which collects pollen from other flowers.


anther

filament

ovule

nectary

ovary

stigma

The pollen needs to be The pollen needs to be The pollen needs to be The pollen needs to be moved from one flower moved from one flower moved from one flower moved from one flower to another flower of to another flower of to another flower of to another flower of the same kind. the same kind. the same kind. the same kind.

ItItItIt’’’’s moved by bees and s moved by bees and s moved by bees and s moved by bees and other insects and other insects and other insects and other insects and

sometimes, by the wind.sometimes, by the wind.sometimes, by the wind.sometimes, by the wind.

anther

pollen

Pollen is made and released from an anther.Pollen is made and released from an anther.Pollen is made and released from an anther.Pollen is made and released from an anther.


anther

filament

ovule

nectary

ovary

stigma

Pollination happens when pollen lands on the stigma.Pollination happens when pollen lands on the stigma.Pollination happens when pollen lands on the stigma.Pollination happens when pollen lands on the stigma.

Once the pollen grain reaches the stigma it produces a pollen tube.

The pollen tube grows down to the ovary.

When the pollen reaches the ovary it fertilises the plant’s ovules (egg cells). This is called fertilisationfertilisationfertilisationfertilisation.

Then seeds can begin to form.


Once the seeds have been made the flower needs to scatter them on the ground far away from the parent plant to prevent overcrowding. This is called seed dispersalseed dispersalseed dispersalseed dispersal.

Once the seeds have been dispersed they will have the chance to germinategerminategerminategerminate. Germination is when a seed starts to sprout and grow into a new plant.

SAMPLE SLIDE


How new plants are reproduced.How new plants are reproduced.How new plants are reproduced.How new plants are reproduced. The word reproduce means ‘make again’. Reproduction is the

process of making a new plant.

Pollination happens when pollen lands on a flower’s stigma.

If plants are to produce seeds they have to be pollinated.

Fertilisation is the joining together of a pollen grain and

an egg cell from the ovary where eggs are made.

When this happens a new seed starts to grow.

Seed dispersal is the way in which seeds are spread away

from the parent plant to places where growing conditions are good.

Germination happens when a seed starts to sprout and grow.

anther

filament

ovule

nectary

ovary

stigma

pollination

fertilisation

seed dispersal

germ

inat

ion


Plants start life as a seed. Different kinds of plants produce different kinds of seeds but, every seed holds the beginnings of a new plant. When a seed falls on the ground, it needs warmth and water in order to germinate. GerminationGerminationGerminationGermination happens when the seed starts to grow.

seeds with wings

seeds inside a seed case

seeds inside fruit

seeds inside a pod


A tiny root starts to push its way down through the soil in search of water and nutrients.

A shoot pushes its way upwards out of the ground. This is the stem and the first leaves of the plant.


In order to grow, plants have to produce their own food.

They do this through a process called photosynthesisphotosynthesisphotosynthesisphotosynthesis which is the way the leaves use energy from sunlight, carbon dioxide and water to make sugars, which the plant uses as food.

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When the new plant has matured, the next stage is reproductionreproductionreproductionreproduction. Reproduction is the process of making another new plant.

Can you remember Can you remember Can you remember Can you remember how this happens?how this happens?how this happens?how this happens?

anther

filament

ovule

nectary

ovary

stigma


When the plant has made new seeds, the next stage is the spreading of those seeds. We call this seed dispersalseed dispersalseed dispersalseed dispersal.

beans

sunflower

sunflower seeds


Seeds are spread in many different ways. Some seeds, like dandelion and poppy seeds, are scattered by the wind.

A poppy seed head.

A dandelion seed head.

poppy seeds


Other seeds are dispersed by animals. Burrs stick to the fur of animals and are spread in this way. SAMPLE SLIDE


Some seeds are dispersed by animals such as squirrels who hide acorns for the winter.

Others are eaten by birds or small animals such as mice and then fall to the ground in their droppings.


Waterlilies depend on water to spread their seeds.

seed pod


Humans spread seeds too by buying seeds and planting them in their gardens.SAMPLE SLIDE


Once the seed falls to the ground another plant can grow. It might begin to germinategerminategerminategerminate straight away or it might lie dormant for some time before germinating.

Then ………………….. It all starts again!

5

1

3

4

Bean seeds

2SAMPLE SLIDE


The lifecycle of a flowering plant.The lifecycle of a flowering plant.The lifecycle of a flowering plant.The lifecycle of a flowering plant.

All plants begin life as a seed.

flower

fruit

seed

seedling

young plant

mature plant

In the right conditions, the seed germinates and grows into a new plant.

The plant grows. Flowers form and bloom.

The flowers are pollinated and fertilisation takes place.

The new seeds are dispersed and start to grow.

New seeds are produced.

pollination

fertilisation

seed dispersal

germ

inat

ion


The lifecycle of an apple tree.

In summer, the apples grow bigger and change colour.

In autumn the apples ripen and fall from the tree.

The outer wall of the ovary develops into the fleshy white part of the apple.

The inner wall of the ovary becomes the apple core

around the seeds.

The pollen grains send pollen tubes down to the

flower’s ovary and

fertilisation happens. Now

need seeds can form.

When the bee lands on a flower of

another apple tree, pollen

from the bee’s body is left on

the stigma.

Honey bees are attracted to the tree’s flowers. As the

bees collect nectar they also pick up pollen which sticks to

their bodies.

During the winter an apple tree rests. When the

warmer spring weather arrives, leaf buds unfold and flower buds begin to grow on the ends of the tree’s twigs.

Some apples rot on the ground and their seeds are released.

Others are dispersed by birds or animals that eat them.

Some of the seeds will germinate and begin to grow

into a new apple tree.


Explore the part that flowers play in the life cycle of flowering plants, including pollination, seed formation and seed dispersal.

Understand that plants have a lifecycle and that it is different from the lifecycle of animals.

Sequence the stages of a plant’s lifecycle.

• know that flowering plants reproduce• know that the lifecycle of flowering plants includes pollination, fertilisation and seed

production.

• know that insects play a part in pollination• know the steps in the pollination cycle



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pollination is a very important part of the lifecycle do you know · pdf file ·...

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