Cells detecting the boundary of a surface are subject to less lateral inhibition than cells detecting the center of the same surface. this leads to an effect called

to this answer it would be edge enhancement

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