I just wanted to see if I got my answers correct, please explain your answer so I can check up with mine.

Aflower has 26 chromosomes. to create a new flower,how many would a sperm cell have what is called?

Worth 30 points! in this diagram, both polygons are regular. what is the value, in degrees, of the sum of the measures of angles abc and abd?

X² + 4y² = 36 the major axis runs along: a) y=4x b) x-axis c) y-axis