In sexual reproduction, a sperm and egg cell unite to form the first cell of the new offspring.
Anisogamous
sperm and eggs/ovaries
genes
We get organisms because eggs and sperm unite to form embryos, usually. Although some organisms form from spores or cell division.
External. In most cases, adults release sperm and eggs into the surrounding water, where the (unprotected) eggs are fertilized and mature into new organisms.
yes
No, girls do not have sperm. Sperm are the male's reproductive cells. Only men have sperm. Girls (females) have eggs instead.
Some examples of hermaphroditic organisms include earthworms, snails, slugs, and certain species of fish, such as clownfish. In these organisms, each individual possesses both male and female reproductive organs, allowing them to produce both eggs and sperm.
No, meiosis does not occur in all growing organisms. Meiosis is a specialized form of cell division that occurs in sexually reproducing organisms to produce gametes (eggs and sperm). Organisms that reproduce asexually, such as bacteria and some plants, do not undergo meiosis.
In the cells that will divide to become eggs or sperm (or the eggs or sperm themselves).
sperm
The eggs are fertilized before the female lays them, when she mates. The sperm swims to the eggs to fertilize them.