Growing Plants

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The functions of the following are; 

seed coat = protects the embryo 

embryo = grows into roots and shoots and become new plant

food store = contains starch, used as a source of energy for the embryo.



seeds need water, oxygen and warmth to successful germination.

warmth - gives a suitable temperature for enzymes involved in germination to act. 

moisture - water allows the enzymes to digest the starch to provide energy for germination.

oxygen - is needed for respiration to take place to produce energy for the seeds to germinate.

As the temperature increases from 0-20 degrees the percentage of germination increases, beyond this temperature the percentage of germination slowly decreases.

Labelled structures within a flower showing coloured petals, stigma (which sits above the ovary), ovary containing the ovule, nectary at the base of the flower. Stamens are made up of a long filament, which ends in an anther. The sepals are green leafy structures which lie beneath the petals.  (

Sepals - protect un-open flower 

Petals - to attract insects

Anther - produces pollen 

Stigma - pollen grain lands here

Ovary - produces female sex cell called ovules.

Nectary - produces sugar nectar to attract insects.

Insect Pollinated -

Petals - flower is large, bright coloured petals, scented and nectar. = to attract insects.

Pollen - pollen grains are sticky, rough surface, small numbers = to stick to insects body. small numbers because it is more reliable. 

Stigma - stigma inside the flower with sticky surface = increased chance of animal brushing against


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