Give three requirements for a seed to germinate
water
warmth
oxygen
What is the name of the place on the ovule that the pollen tube grows through
micropyle
Give 2 structural adaptations of an insect pollinated flower
stigma inside petals
stamens (or anthers) inside petals
nectary
larger/brighter petals
Give 2 structural adaptations of wind pollinated flowers
feathery stigma
stigma outside petals
stamens (or anthers) outside petals
no nectary
smaller/less bright petals
What is the function of the flower
Reproduction
Name the substances produced by the pollen tube that allows it to grow down the carpel into the ovule
Enzymes
What is the food store inside a seed made up of?
Starch
What 2 methods of pollination are used by most flowers?
Insects & wind
What name is given to the transfer of pollen from the anther to the stigma of the same flower, or to another flower of the same plant?
Self pollination
Which part of the flower becomes a fruit following fertilisation?
Ovary
What is the name of the female part of the flower?
Carpel
Seeds are dispersed away from the parent plant so that when they germinate they don't compete for resources. Give 2 resources plants compete for
Light
Water
mineral ions - NOT NUTRIENTS!
Which part of the flower becomes a seed following fertilisation?
The ovule
What name is given to the transfer of pollen from the anther of one plant onto the stigma of a different plant?
cross pollination
Name the 2 parts that make up the male stamen of a flower
Anther and filament
Why does a seed need water to germinate?
It activates the amylase enzyme
(to break down the starch into glucose so that respiration can begin)
Which part of the pollen grain is the only part to travel down the pollen tube?
The (male) nucleus
Which specific part of the flower produces pollen?
Anther
Name the 3 parts that make up the female carpel of a flower
Stigma, Style & Ovary
What chemical reaction will a plant start to do once it has grown leaves
Photosynthesis
Why does a seed need oxygen in order to germinate
For Respiration
(to release the energy in glucose so it can grow)
What is the name of the male part(s) of the flower
Stamen
What enzyme is used to break down the food store inside the seed to produce glucose that can be used in respiration (to release energy for growth)?
Amylase
Where specifically are the ovules stored?
Ovary
Pollination is the transfer of pollen from ______ to _______
Anther to Stigma