Bio Lab 4 - Land Plants Intro Flashcards
Viridaeplantae
Domain: Eukary ~500 MYO autotrophs cellulose in cell walls starch for energy storage contains chlorophyl A &B, carotenoids
Desiccation
Dehydration
Managing Desiccation
Mutlicellularty reduces surface volume
Waxy coatings reduce gas diffusion
Stomata allow controlled gas transfer through wax
Xylem and Phloem transport nutrients up and down
Haplodiplontic life cycle skips generations
Clade Bryophyte
3 Phylum Most ancestral plant type Require water for reproduction Limited protection against desiccation Protect embryos with layer of parent material Produce spores that survive desiccation Seedless Gametophyte dominant
Phylum of Bryophyte
Hepaticophyta
Brophyta
Anthocerophtya
Phylum Hepaticophyta
of Clade Bryophyte, Kingdom Viridaeplantae Liver wort 400 MYA Cutinized surface Asexual Pores (pre stomata)
Phylum Brophyta
of Clade Bryophyte, Kingdom Viridaeplantae Mosses Stomota on sporophyte, always open Waxy Conducting cells (pre xylem&phloem)
Phylum Anthocerophyta
of Clade Bryophyte, Kingdom Viridaeplantae Rare Hort worts True stomata on sporophyte Waxy Mutalistic with nostoc to fix nitrogen
Seedless Vascular Plants
Vascular tissue Xylem and Phloem Lignin strengthens xylem plants grow taller Still have swimming sperm, require water Sporophyte dominant
Phlyem Lycophyta
Seedless Vascular Plant Wolf Plant Club moss Rhizomes: root like Microphylis: leaf like Reproduce asexually Entire plant can play dead for years
Phylum Pterophtya
Seedless Vascular Plants
feather or fern like
2 Genuses
Genus Equisitum
Phlyum Pterophyta, Viridaeplantae
Horse tails
Grow about 1 m tall
Elators help fly in dry air, roll up in humidity to fall where wet
Genus Psilotum
Phlyum Pterophyta, Viridaeplantae
Whish ferns
Photosynthetic stems
Sporangia on end of stem
Clade True Ferns
Phylum Pterophyta, Viridaeplantae
Temperature and tropic environments
Can grow as epiphytes
Stem called frond has leaflets with sporangium and fiddlehead at top (sporophtye)
Archegonia and Antheridia
Archegonia: Female egg
Antheridia: contains male sperm, each has 1000s of sperm. All housed in Anthardium
