Which organisms are specifically targeted by fungicides?

Fungicides are specifically designed to target fungi and their spores. This includes a wide variety of organisms such as molds, yeasts, and the spores that can lead to fungal infections in plants and other substrates. The action of fungicides typically involves disrupting critical biological processes in fungi, ultimately inhibiting their growth or killing them outright.

Other options reference different types of organisms: bacteria and viruses are targeted by antimicrobial agents rather than fungicides, while weeds and insects are addressed by herbicides and insecticides, respectively. Protozoa and algae are also not targeted by fungicides, as they belong to entirely different biological groups. Therefore, the choice identifying fungi and fungal spores accurately reflects the specific purpose of fungicides in pest control and agricultural practices.