Which type of chemical reaction would most likely proceed spontaneously ? a. anabolic b. endergonic c. exergonic d. metabolic

It would be exergonic because it's reaction is a chemical reaction where the change in the free energy is negative (there is a net release of free energy), indicating a spontaneous reaction. These reactions usually do not require energy to proceed, and therefore it would occur spontaneously.

"do a testcross with a homozygous recessive plant."

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