Can someone help me please​

Aflower has 26 chromosomes. to create a new flower, how many chromosomes would a sperm cell have? what is this process called? part 2: within a flower cell that has 26 chromosomes, how many chromosomes would a cell that is created within the stem of a flower as it grows, have? what is this process called?

If the scale factor between two circles is 2x/5y what is the ratio of their areas?

Table which ratio is equivalent to 3: 7? 6: 7 3: 21 24: 56 15: 30