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Introduction to Plants

Standard Grade Biology

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Reproduces sexually

Larch cone containing seeds

Larch

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Ash Tree

Reproduces sexually

Seed cases known as ‘keys’

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Nettle

Also reproduces asexually vegetative propagation

Has flowers

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Also reproduces through vegetative propagation

Marsh Buttercup

Reproduces sexually and asexually

Has flowers

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Parts of a Flower

Petal

Nectary

Ovary

Stigma

Style

Sepal

Anther

Ovule

Filament

Flower stem

Stamen

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Flower Part

Part Function

Petal

These are used to attract insects into the flower, they may have guidelines on them and be scented.

Stigma

Is covered in a sticky substance that the pollen grains will stick to.

Style

It raises the stigma away from the ovary to decrease the likelihood of pollen contamination. It varies in length.

Ovary

Ovules are produced inside this.

Ovule

This will become a seed once fertilisation has taken place.

Stamen

This is the collective name for the anther and the filament.

Flower Stalk

Gives support to the flower and elevates the flower for the insects.

Nectary

This is where a sugary solution called nectar is produced.

Sepal

These protect the flower whilst the flower is developing from a bud.

Filament

This is the stalk of the anther.

Anther

Pollen is produced here.

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