I two short sentences, What are the female and male sex cells in the flower?

The female sex cell in the flower is the ovule, while the male sex cell is the pollen grain.

In two sentences, Explain what occurs during fertilization.

During fertilization, the pollen grain lands on the stigma of the flower and forms a pollen tube that grows down to the ovary. The male sex cell from the pollen is then transferred to the ovule in the ovary, leading to the fusion of the male and female sex cells and the formation of a zygote.

In one sentence, Explain what occurs during fertilization.

Fertilization is the process of the male sex cell from the pollen uniting with the female sex cell in the ovule to form a zygote.

What would happen if one of the parts of the flower (for example the anthers) was damaged or diseased?

If the anthers of a flower were damaged or diseased, it could affect the production of pollen and ultimately hinder the process of fertilization, leading to a lower rate of successful seed formation and potentially impacting the plant's ability to reproduce.