BIOL 152 1st Edition Lecture 16 Outline of Last Lecture I Case study II Oomycetes III What makes an animal an animal IV Plants and animals a Similarities b Differences V Biological feedback a Homeostasis b Positive and negative feedback Outline of Current Lecture I Kingdom fungi a Characteristics b Land surface fungi i Types ii Examples II Lichen diversity Current Lecture Kingdom fungi Characteristics Eukaryotic Heterotrophic Chitin strengthens cell walls Filamentous Reproduce by spores Obtain nutrients by absorption o Secrete powerful enzymes o External digestion Ancestry aquatic These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute Chytrids first group o Decomposers o Aquatic fungi Some are parasites chytridiomycosis Affects skin on frogs Global pathogen Has caused frog extinction Spreading rapidly through Central America Land surface fungi Zygomycota Ex Piolobolus hat thrower Common on herbivore dung Stalk elongates rapidly Forms sporangium at tip Phototrophic bends towards light Subsporangial vesicle acts as lens and repellant Phylum named for spore type Zygospore only diploid cell Ex Black bread mold Asexual reproduction Ascomycota Septa between cells o Separations between individual cells New phase o Dikaryotic phase n n two separate haploid nuclei sac fungi named for spore type o Ascospores in asci sacs Mostly haploid o Ex Cup fungi morels yeast Basidiomycota Phylum named for spore type Basidiospores on basidium clubs Some have extensive subterranean biomass Mushrooms gill fungi wheat rust puff balls bracket fungi About 25 000 types Lichens Fungal mycelium main body Green algae usually or cyanobacteria photosynthetic layer Extremely widespread o Deserts tree trunks rocks arctic etc o 350 species Lichen diversity 3 basic growth forms Crustose o Very thin thallus tightly connected to substrate Foliose o Thicker thallus loosely connected to substrate Fruticose o Thallus 3 D mostly free from substrate
View Full Document
Unlocking...