Which of the following is an example of a pioneer species?

a. fungus

b. trees

c. shrubs

d. grass

Fungus is an example of a pioneer species. Fungus is any group of related plants (e. g. molds, mushrooms, yeasts) that have no flowers and that live on dead and decaying things. They are saprophytic and parasitic spore-producing eukaryotic typically filamentous organisms.