Plant Reproduction

Front 1

Pollination by insects

Back 1

Insects can carry pollen from flower to flower. Examples are buttercups, orchids, peach and apple. Many white, night scented flower are pollinated by moths.

Front 2

Fertilisation (process)

Back 2

1) Pollen grains stick to stigma
2) Male gamete moves down pollen tube
3) Pollen tube enters embryo sac through the micropyle.
4) Male and female gameter fuse and fertilisation occurs.
5) Ovule becomes seed and ovary wall forms part of fruit

Front 3

stamens

Back 3

-male sex organ and is made up of
1) an anther which contains pollen
2) a filament or stalk which holds the anther up.
The pollen is the male eggs.

Front 4

Pollination

Back 4

is the process that takes place when pollen is carried from the anther to a stigma. Most plants need outside agents to carry out pollination. Most important pollinators are insects espically bees and wind.

Front 5

Self pollination

Back 5

occurs when pollen is carried to the stigma of the same flower or of a flower on the same plant.

Front 6

Radicle

Back 6

grows into the root system of the plant.

Front 7

petal;corolla

Back 7

The petals may be coloured or scented to attract insect or bird pollinators

Front 8

Cross pollination

Back 8

occurs when pollen is carried to the stigma of a flower on another plant.

Front 9

Carpel

Back 9

-is the female organ. It is made up of
1) sticky stigma to catch pollen
2) style, which holds up the stigma
3) ovary in which are ovules
The ovules contain female egg cells.

Front 10

Fertilisation

Back 10

The fusing of the male and female gametes

Front 11

Plumule

Back 11

is the part of the seed embryo that grows into the shoot system - the stem and the leaves of the plant.

Front 12

sepal;calyx

Back 12

The sepals protect the flower bud

Front 13

Pollination by wind

Back 13

The wind can carry pollen from flower to flower. Examples include sweet corn, grasses and catkins.

Front 14

Conditions needed for Germination

Back 14

1) Water - is taken in through the micropyle. The seed swells up and bursts.
2) Oxygen - is used in respriation to produce the energy for growth.
3) Warmth - A suitable temp is required but varies.

Front 15

nectary

Back 15

The nectary makes a sugary liquid called nectar, which insects feed on.

Front 16

Cotyledons

Back 16

are the seed's food source. when the seed has germinated the cotyledon may grow into the first leaves which begin the process of photosynthesis
This process provides food for the seedling.

Front 17

Testa

Back 17

The testa or seed coat protects the seed's cotyledons.

Front 18

Reproduction

Back 18

A plant has flowers for only one reason- to reproduce. The flower is the reproductive organ of a flowering plant. Flowering plants reproduce sexually.