BIOA02H3 Study Guide - Quiz Guide: Asexual Reproduction, Plasmogamy, Saprotrophic Nutrition
12 Jun 2016
School
Department
Course
Professor
43
BIOA02H3 Full Course Notes
Verified Note
43 documents
Document Summary
Along with heterotrophic bacteria, fungi are the earth"s premier decomposers. Fungi obtain carbon by breaking down organic organisms. Fungi are grouped into two main groups based on how carbon is obtained. Fungi can affect organisms positively = mutualist ; or negatively = parasitic. Take carbon sources directly from host, host is negativel impacted by the interaction . May also act as decomposers once host is dead. Mutualists: (+/+) take carbon sources directly from host, but engage in mutally beneficially interaction b providing a service in return, usually providing water or nutrients from the soil. Fungi play critical roles in all terrestrial ecosystems. Ex: buddling yeast: yellow scars on the surface show where buds were produced (asexual repro). It is used in the production of bees, wine and bread. Most of the fungi organism is composed of the mycelium: a mass of hyphae. Hyphae (hyphe = web): thread-like filaments of a fungus. Apical growth: hyphae grow outward by growth at tips.
