3) a) What are stomata (singular = stoma)?

b) Where on a plant are they located?

a stomata is a pore in the coat of the leaves and/or stems

a stomata is found on stems and/or leaves

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