Ahydrocarbon having chemical formula c4h8 has one double bond. identify its class

This hydrocarbon because it possess at least 1 double bond it would be an Alkene.

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