David Oliver age  10 from Georgia for his question:

What is a spore?

A dusty spore may be a resting bacterium for ~ future fern. Trees and flowering plants multiply from seeds. Ferns and mosses, seaweeds and toadstools multiply from spores. So do some of the simple, single celled creatures of the animal kingdom. These simple plants and animals far outnumber the binger complex ones. They also come in more varieties. Hence there are numerous different spores in the world. And each type carries on its duties in its own way. All spores, however, are very small    most of them too small to be seen without a magnifying lens.

A water alga grows a spare case full of zoospores. The package pops open and the ripened zoospores swim off waving their tiny tails. Soon they lose their tails and grow into new alga plants. A fern score brows a tiny plant. It produces two cells that merge together to grow a new fern plant. Some spores are male and female gamete cells. The pairs mere into zygotes that sprout new plants. Bacteria multiply by dividing into pairs of new cells. But sometimes a bacterium shuts itself inside a hard shell and becomes a spore. ,Then conditions improve, the spore sheds its shell and starts living again as a busy bacterium.