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.
WOW FACTOR = WATER, OXYGEN, WARMTH!
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.
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…