A group of individuals of the same species that interact will find a mate and cross breed and produce a stronger species to survive they're environment. per Darwin's law..
An Anemone has 4 sepals, I hope this helps you.
The number of chromosomes in a sex cell is half the number of chromosomes in a body cell. Think of it this way: 1 egg (women sex cell) combine with 1 sperm (male sex cell) to make 1 whole cell.