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Bio 102 Fungi

Exam 2

TermDefinition
Fungi Heterotrophs that feed by absorption. Diverse Lifestyles ➪ Decomposers (Saprotrophs), Parasites, Mutualistic Symbionts Essential for success of terrestrial ecosystems. . . Break down organic material / recycle nutrients
Absorptive Nutrition Are heterotrophs but do not ingest food. . . Instead have exoenzymes that break down complex molecules into smaller compounds for the fungi to absorb.
Morphology of Fungi Body Structures for Absorptive Nutrition: • Mycelia • Hyphae • Septa •Haustoria
Mycelia Fungi Body ➪ networks of branches hyphae
Hyphae Filaments ➪ long and skinny fungal cells Hyphal cell walls are made of chitin
Septate Fungi Hyphae divided into cells by septa, with pores allowing cell-to-cell movement of materials. • Ascomycetes (sac fungi) • Basidiomycetes (club fungi)
Coenicytic Fungi Lack septa, continuous cytoplasm with many nuclei. • Mucoromycetes • Zoopagomycetes • Cytrids
Haustoria Allows penetration of host tissues.
Created by: user-2064055
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