Final answer:
Enzymes produced by necrotropic organisms, which facilitate the breakdown of host tissue, include cellulases, pectinases, and polygalacturonases.
Step-by-step explanation:
The enzymes produced by necrotrophic organisms typically include those that degrade cell walls and other structural components of a host organism's cells, allowing the pathogen to kill and obtain nutrients from dead host tissue. The correct answer to the question is: A) Cellulases, pectinases, polygalacturonases. These enzymes, such as cellulases and pectinases, break down the cell wall components cellulose and pectin, respectively, while polygalacturonases degrade the pectic substances in the middle lamella of plant cells.
Enzymes like collagenase and gelatinase are mentioned as part of microbial and pathogenic organism's arsenal but correspond to a different type of interaction with the host, often involving connective tissue rather than cell walls. Proteases and lipases also play significant roles in nutrient acquisition by pathogens but they are not as closely associated with the degradation of cell walls.