Pollination Flashcards
Define pollination.
Pollination is the transfer of pollen from an anther to a stigma of a flower from the same species
Define self-pollination.
Self-pollination involves the transfer of pollen from an anther to a stigma on the same plant
What does self-pollination lead to?
Self-fertilisation
What type of pollination leads to self-fertilisation?
Self-pollination
What can self-fertilisation be said to be?
An extreme form of inbreeding
Describe the resulting seeds of self-fertilisation.
They may be less sturdy and vigorous
Give an example of a type of plant which often self-pollinates.
Cereals
Define cross-pollination.
Cross-pollination involves the transfer of pollen from an anther to a stigma on a different plant
What does cross-pollination result in?
Cross-fertilisation
Describe the resulting seeds of cross-fertilisation.
Show variation and vigour
List the methods of pollination.
2
Wind pollination
Animal pollination
Why do plants rely on wind or animals for pollination?
2
As they cannot move from place to place
Therefore, in order to get the male gametes to reach the female gametes they must rely on wind or animals
Write a note on wind pollination.
3
Wind was the original form of pollination
It is very wasteful of pollen
E.g. conifers, grasses, oak, hazel and alder
What was the original form of pollination?
Wind pollination
Give some examples of plants which are pollinated by wind.
5
Conifers
Grasses
Oak
Hazel
Alder
