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BIOB 170 Week 7 Notes

by: Isabella Sturgeon

BIOB 170 Week 7 Notes BIOB 170

Marketplace > University of Montana > Biology > BIOB 170 > BIOB 170 Week 7 Notes
Isabella Sturgeon
GPA 3.67

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About this Document

These notes are from week 7 of Principles of Biological Diversity. We are now entering the 5th supergroup of eukarya.
Principles Biological Diversity
Dr. Kevin Murray
Class Notes
BIOB 170, Biology
25 ?




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This 2 page Class Notes was uploaded by Isabella Sturgeon on Sunday March 20, 2016. The Class Notes belongs to BIOB 170 at University of Montana taught by Dr. Kevin Murray in Spring 2016. Since its upload, it has received 9 views. For similar materials see Principles Biological Diversity in Biology at University of Montana.


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Date Created: 03/20/16
Week 7 BIOB 170 Notes Unikonta (Super group 5) • Plantae o Multicellular o Primarily terrestrial o Sexual reproduction § Antheridia- sperm § Archegonia- egg § Meristems- regions of rapid cell division § Apical permit directional growth o 1. Bryophyta § Mosses • Diverse • Bryidae (95%) • Sporophyte- phallus like o Operculum is shot off an sporangia is now guarded by peristomal teeth § Teeth close when moist • Gametophyte o Dominant phase o Filament immature o Leafy adult stage w/ gametangia • Ecological importance o Nutrient cycling, intercept above ground nutrients o Sink for atmospheric CO2 o Water cycling, slows runoff o Soil stabilization o Low in essential nutrients o Extremely slow to decompose • Sphagnidae (peat mosses) o Sphagnum- genus to about 200 species § Covers 2% of terrestrial earth § Nutrient cycling § Specialized water uptake § Gametophytes dominant and interconnect § Hyaline cells are hollow and hold water, dead at maturity § Contribute to peat lands (decomposed plant tissue) § Holds 20x dry weight in water § Makes water acidic § Antimicrobial § Lives in cold water § Partially anerobic § Ecological importance • Sink for nutrients • Slows nutrient cycle • Used for 20% of energy in Ireland § Liverworts § Hornworts § Primative non vascular


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