Unit 4.2 - Adaptations of flowers to promote cross-pollination Flashcards
1
Q
Name the 5 adaptations of flowers to promote cross-pollination.
A
- chemical self-incompatibility
- irregular flower structure
- dichogamy
- monoecious plants
- dioecious plants
2
Q
explain self-incompatibility
A
gametes from the same parent plant are unable to fuse and form a zygote.
(if zygote forms it will fail to develop)
3
Q
explain irregular flower development
A
if stigma is above anthers, pollen grains will not fall onto it
4
Q
explain dichogamy
A
anthers and stigmas mature at different times
5
Q
explain monoecious plants
A
have separate male and female parts on the same plant
6
Q
explain dioecious plans
A
have separate male and female plants
7
Q
A
