• Like
  • Save
Evolution of plants and non vascular.pptx
Upcoming SlideShare
Loading in...5
×
 

Evolution of plants and non vascular.pptx

on

  • 661 views

 

Statistics

Views

Total Views
661
Views on SlideShare
661
Embed Views
0

Actions

Likes
0
Downloads
47
Comments
0

0 Embeds 0

No embeds

Accessibility

Categories

Upload Details

Uploaded via as Adobe PDF

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment

    Evolution of plants and non vascular.pptx Evolution of plants and non vascular.pptx Document Transcript

    • 10/14/13 REVIEW 1 A 1 B 1 C 0 Outgroup 0 2 1 0 0 0 3 1 0 1 0 4 1 0 1 0 5 1 0 1 0 EVOLUTION OF PLANTS OBICO JJA, Instructor Department of Biology 1
    • 10/14/13 amyloplasts (starch grains): alpha-1,4-glucopyranoside cell wall thylakoids granum stroma chloroplasts chloroplast: chlorophyll a & b grana starch Elodea (Hydrocharitaceae Alismatales) HAPLOID (n) MulticelledStage (Adu lt) HAPLOID (n) MulticelledStage (Adu lt) mitosis mitosis HAPLONTI C Isogamy Sp ores (n) Gamete (n) HAPLONTI C Oogamy Zygote (2n ) erm Egg Sp (n) (n ) Sp ores (n) fertilzation i meiosis A Gamete (n) fertilzation i meiosis B Zygote (2n ) 2
    • 10/14/13 Charales - oogamy oogonium Coleochaete Nitella Chara The Land Plants =Embryophyta (embryophytes) CELL #1 plasma membrane CELL #2 plasmodesmata middle lamella cellulosic cell wall The first colonization of plants on land during the Silurian period, ca. 400 million years ago. }  Land Plants now dominate the earth. }  cell wall: cellulosic plasmodesmata (in some Green Plants) 3
    • 10/14/13 Two possible hypotheses: GAMETOPHYTE (n) mitosis Spores (n) Archegonium Antheridium (n) (n) produce meiosis Sporocyte (2n) HAPLODIPLONTIC ("Alternation of Gen erations") Sporangium (2n) Egg (n) Sperm (n) } lost by reduction and modification in the Angiosperms and some Gnetales (Sperm non-flagellate in Conifers, Gnetales, and Angiosperms) fertilization SPOROPHYTE (2n ) Zygote mitosis Embryo (2n) mitosis (2n) 4
    • 10/14/13 5
    • 10/14/13 antheridiu m antheridiu m sperm cells Mnium (moss) Marchantia (liverwort) egg cell neck archegonium “Bryophytes” paraphyletic Marchantia (liverwort) 6
    • 10/14/13 Mosses Hornworts Liverworts “Bryophytes” Liverworts Hepaticae Two basic forms: -thalloid -leafy Asterella sp. 1 7
    • 10/14/13 Bazannia a leafy liverwort Asterella sp. 2 Conocephalum sp. Fossombronia sp. 8
    • 10/14/13 pore pore gemmae elaters gemma cup sporophyte Marchantia spores Marchantia stomate 9
    • 10/14/13 Hornworts (Anthocerotae) Hornworts 10
    • 10/14/13 Mosses (Musci) peristome teeth operculum calyptra spores peristome tooth operculum GAMETOPHYTE (n) mature capsule (sporangium) mitosis germinating spore protonema Spores (n) Archegonium Antheridium (n) (n) produce antheridia sporophyte (2n) meiosis Sporocyte (2n) HAPLODIPLONTIC ("Alternation of Gen erations") Sporangium (2n) SPOROPHYTE (2n ) embryo (2n) Zygote mitosis Embryo (2n) archegonia Sperm (n) and some Gnetales (Sperm non-flagellate in Conifers, Gnetales, and Angiosperms) fertilization costa archegonial neck Egg (n) } lost by reduction and modification in the Angiosperms mitosis (2n) gametophyte (n) 11
    • 10/14/13 peristome teeth operculum calyptra spores peristome tooth operculum mature capsule (sporangium) germinating spore protonema peristome teeth operculum antheridia calyptra sporophyte (2n) spores peristome tooth operculum mature capsule (sporangium) germinating spore costa archegonial neck protonema antheridia sporophyte (2n) embryo (2n) archegonia costa archegonial neck embryo (2n) gametophyte (n) archegonia gametophyte (n) spore (n) protonema spore (n) 12
    • 10/14/13 spore (n) protonema spore (n) protonema spore (n) gametophyte (n) protonema gametophyte (n) spore (n) protonema gametophyte (n) fertilization archegonium antheridium sporophyte (2n) archegonium antheridium 13
    • 10/14/13 spore (n) protonema gametophyte (n) meiosis fertilization sporophyte (2n) archegonium Sphagnum Peat Moss antheridium Sphagnum Peat Moss 14