BIO153H5 Chapter Notes - Chapter 31: Soredium, Conidium, Cyanobacteria
Document Summary
Lecture outline: the honey mushroom armillaria ostoyae in malheur national park in eastern oregon is enormous. o. Concept 31. 1 fungi are heterotrophs that feed by absorption. Some parasitic fungi, including some that infect humans and plants, are pathogenic. Fungi cause 80% of plant diseases: mutualistic fungi also absorb nutrients from a host organism, but they reciprocate with functions that benefit their partner in some way. Extensive surface area and rapid growth adapt fungi for absorptive nutrition: yeasts are single-celled fungi. In many fungi, the haploid nuclei do not fuse right away. In some species, heterokaryotic mycelia become mosaics, with different nuclei remaining in separate parts of the same mycelium or mingling and even exchanging chromosomes and genes. In some fungi, the haploid nuclei pair off two to a cell, one from each parent: such a mycelium is called dikaryotic, meaning two nuclei. If this is true, flagella were lost on more than one occasion during fungal evolution.
