pollination Flashcards
pollination definition
The fertilisation of flowers by the transfer of pollen from one to the other
male sex organ of a flower
stamen
female sex organ of a flower
pistils
where are the male gametes produced
they are contained in pollen grains which are produced in the anther
Where are the female gametes produced
egg cells or ova are produced in the ovule found in the ovary
self pollination
the pollen grain lands on the same flower it originated from
Cross pollination
the pollen grain lands on a different flower it originated from
difference in stamen (insect pollinated vs wind pollinated)
insect pollinated - enclosed within the flower so insects must make contact.
Wind pollinated - exposed so the wind can blow the pollen away.
difference in petals (insect pollinated vs wind pollinated)
insect pollinated - the petals are bigger and more colourful.
wind pollinated - the petals are usually green and dull
difference in type of stigma (insect pollinated vs wind pollinated)
insect pollinated - enclosed and sticky that pollen attaches to insects.
wind pollinated - exposed and feathery to catch pollen blown from the wind.