PLANTS AROUND USPLANTS AROUND US

PLANTS AROUND USPLANTS AROUND US

Plants around us can be differentshapes, sizes and colours.

Plants give us food,

medicine,

clothes

and oxygen.

Plants have different life processes: nutrition

interaction

reproduction

We can classify plants into:herbaceous plants, bushes and trees.

herbaceous plants

bushes

trees

The flower is the reproductive organ of a plant.Most flowers have male and female reproductive organs.

THE REPRODUCTIVE ORGANS OF A PLANT

THE STAMENSThe stamens are the male reproductiveorgans and these produce pollen.

THE CARPELThe carpel is the female reproductiveorgan.

THE CARPELThe carpel includes the stigma and theovary.

ovary

stigma

The ovary produces ovules.

In this flower we can see:

The reproductive organs of a flower include:

stamens

The reproductive organs of a flower include:

stamens

pollen

The reproductive organs of a flower include:

stamens

pollen

carpel

The reproductive organs of a flower include:

stamens

pollen

carpelovule

The reproductive organs of a flower include:

ovary

stamens

pollen

carpelovule

The reproductive organs of a flower include:

stigma

ovary

stamens

pollen

carpelovule

POLLINATION Pollination is the transfer of pollen fromthe stamens to the stigma of a flower.

TYPESTYPES OF POLLINATIONOF POLLINATIONPollination can be:

Animal pollination

TYPESTYPES OF POLLINATIONOF POLLINATIONPollination can be:

Animal pollination Wind pollination

ANIMAL POLLINATIONANIMAL POLLINATIONAnimal pollination is carried out bybirds, insects and other animals.

Colourful petals attract animals to aflower. These animals come to the plantto drink a sweet liquid called nectar.

Pollen from the stamens sticks to theanimal’s body.

Pollen from the stamens sticks to theanimal’s body.

When the animal travels to another plant,some of the pollen on its body istransferred to the other plant.

WIND POLLINATIONWIND POLLINATIONWind pollinationWind pollination is used by plants is used by plantssuch as such as trees trees andand grasses grasses which whichdon’t have colourful petalsdon’t have colourful petals to attract to attractanimals.animals.The wind The wind blows pollenblows pollen from the from thestamens stamens of these plants to the of these plants to the stigma.stigma.

FERTILIZATIONFERTILIZATIONFertilization is when pollen joinswith an ovule.

The fertilization process happens inthe stigma.

The fertilization process happens inthe stigma.The fertilized ovule becomes a seed.

The fertilization process happens inthe stigma.The fertilized ovule becomes a seed.The stigma develops and forms afruit around the seed.

When a seed lands in soil it cangerminate and a new plant grows.

HOW PLANTS MAKE THEIR OWN FOOD

Plants need water, minerals, carbondioxide and light and energy from theSun to make their own food.

Minerals

Plants make food in their leaves.This process is called photosynthesis.

The leaves absorb carbon dioxidefrom the air through small holes.Using energy from the Sun, the carbondioxide combines with water, mineralsand sunlight to make food.

minerals

During the process of photosynthesis,plants release oxygen into the air. People and animals need oxygen tobreathe.

THE END