a) Sexual reproduction in flowering plants involves:
- the production of male and female gametes
- the transfer of the male gametes to the female ovules in a process called pollination
- fertilisation, after which ovules grow into seeds within a fruit.
b) The processes involved in sexual reproduction include:
- the anther produces the male gametes in pollen grains
- the pollen grains attach to the stigma on top of a carpel, in which the female gametes (ovules) are located
- a pollen tube grows through the carpel's style into the ovule
- the nuclei from the pollen grain migrate into the ovule to fertilise the egg cell nucleus and endosperm nuclei
- the resulting zygote develops into an embryo
- the endosperm and the female tissues of the ovule give rise to seed
- the ovary then grows into a fruit, which surrounds the seed(s).
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