Which is not a model according to the scientific definition?
a drawing of an atom
a light-powered microscope
an explanation of how clouds form
a map of the world

some fungi obtain their nutrients from a living host (plant or animal) and are called most biotrophic fungi have fairly narrow host ranges—they are specialized on a limited called rhizomorphs that allow the fungus to grow from one tree to another. ascospores are formed inside a sac-like structure called an ascus. so your answer is a