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Biology Lecture 2/11

by: Emma Cox

Biology Lecture 2/11 BIOL 1030 - 002

Marketplace > Auburn University > Biology > BIOL 1030 - 002 > Biology Lecture 2 11
Emma Cox
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About this Document

These notes cover characteristics of the phylum Pterophyte
Organismal Biology
Debbie R. Folkerts
Class Notes




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This 3 page Class Notes was uploaded by Emma Cox on Saturday February 13, 2016. The Class Notes belongs to BIOL 1030 - 002 at Auburn University taught by Debbie R. Folkerts in Summer 2015. Since its upload, it has received 67 views. For similar materials see Organismal Biology in Biology at Auburn University.


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Date Created: 02/13/16
Seedless Vascular Plants  No seeds yet  Vascular tissue o 3 tissue systems  dermal tissue system   epidermis of the plant  runs continuously covering outer surfaces of all plant parts  ground tissue system   filler between dermal and vascular tissue  makes up the bulk of plant parts  photosynthesis occurs here and storage of photosynthetic materials  vascular tissue system  found within veins in leaves  specialized for water transport  runs continuously through all plant organs  more than one type o xylem o phloem – transport water with sugars and starches  dissolved in them down stem to the roots  Plant organs o Roots – under ground o Shoot – above ground parts of the plant  Stems and leaves (or modified version)  Microphylls – tiny, simple leaves o first ones ever evolved by plants o single vein of vascular tissue  Megaphylls – big leaf o Branching venation  Annuals – single year life cycle  Perennials – live from year to year o Primary growth – increase in length; shoots get taller and roots get longer o Secondary growth – increase in girth  Homospory – just one kind of spore  Heterospory – more than one kind of spore is produced o Microspores – male   Grow up to be microgametophytes which produce microgametangia with  microgametes (sperm)  Microgametophytes = pollen o Megaspores – female   Megagametophytes; stay in the sporangia on the sporophyte  Megagametophytes produce ovules that will be fertilized through  pollination  Ovules grow up to be seeds  Dominant sporophyte generation  4 major groups today o 2 phyla  Monilophyta (biggest group)  Pterophytes – true fern (biggest group of plants outside of the  flowering plants)  Psilophytes – whisk “ferns”  Arthrophytes – Equisetophytes (horsetails, grasses, scouring  rushes) o Nodes – where leaves are attached o Internodes – area in between nodes o Microphylls o Whorl – more than two leaves attached to a single node o Opposite – one leaf on either side o Alternate – only one leaf at a time  p. Lycophyta – club “mosses”  Fern life cycle  Dichotomous – two way branching o Branching of psilophyte stem


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