What part of the bacteria cell helps it stick to the surface

Pilus

Explanation: Bacteria are prokaryote with single cell and are microscopic in nature.

Pilus at protein structure located in bacterial chromosome they are attach to it surface and aids adhesion to cell surfaces,structures and host cells. Pilus contains adhesin which is located along the pilus its aid the attachment of pilus to cells

There are three basis steps in bacterial attachment; Adsorption,Adhesion and adherance

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