Shelby is a plant breeder who is trying to identify the cause of a disease among a group of trees. She observes that the organism reproduces through spores and has reproductive structures that are shaped like a sac. Which type of fungus is it

Ascomycota

Explanation:fungi are eukaryotic organisms that lacks chlorophyll,roots ,stems and leaves.they feed by decaying death matter and some exist as symbionts.they are found in trees,soil,burnt grass etc.

Fungi may be Unicellular or multicellular and possess whitish and threadlike filaments called hyphae.these hyphae forms a mass called mycellium,which is the main body.

Fungi reproduce asexually through spores.

The Ascomycota is a group of fungi also called sac fungi.their spores are formed in a sac , called ascus.the spores are eight in one haploid spores as they undergo mitotic Division to produce eight nuclei in the same ascus.

Upon maturity,the spores escape through a hole in the ascus and germinate when the fall on favourable places.