seedless plants
DESCRIPTION
Seedless Plants. Plant Evolution. Plant Evolution. Nonvascular Seedless plants (Ordovician - 475 mya) Vascular Seedless plants (Devonian - 400 mya) Vascular Seed plants (Carboniferous - 360 mya) Flowering plants (Cretaceous - 130 mya). Plant Evolution (Common with Algae). - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Seedless Plants](https://reader030.vdocuments.site/reader030/viewer/2022032611/568132ac550346895d9958d3/html5/thumbnails/1.jpg)
Seedless Plants
![Page 2: Seedless Plants](https://reader030.vdocuments.site/reader030/viewer/2022032611/568132ac550346895d9958d3/html5/thumbnails/2.jpg)
Plant Evolution
![Page 3: Seedless Plants](https://reader030.vdocuments.site/reader030/viewer/2022032611/568132ac550346895d9958d3/html5/thumbnails/3.jpg)
Plant Evolution Nonvascular Seedless plants
– (Ordovician - 475 mya) Vascular Seedless plants
– (Devonian - 400 mya) Vascular Seed plants
– (Carboniferous - 360 mya) Flowering plants
– (Cretaceous - 130 mya)
![Page 4: Seedless Plants](https://reader030.vdocuments.site/reader030/viewer/2022032611/568132ac550346895d9958d3/html5/thumbnails/4.jpg)
Plant Evolution(Common with Algae)
Multicellular and Eukaryotic Cell walls made of Cellulose Chlorophyll a and b Store excess sugar as starch
![Page 5: Seedless Plants](https://reader030.vdocuments.site/reader030/viewer/2022032611/568132ac550346895d9958d3/html5/thumbnails/5.jpg)
Adaptations to Terrestrial Life
Apical Meristems Multicellular Dependent Embryos Alternation of Generation Walled Spores produced in Sporangia Other Adaptations
– Cuticle, stomata, Xylem & Phloem, secondary compounds
![Page 6: Seedless Plants](https://reader030.vdocuments.site/reader030/viewer/2022032611/568132ac550346895d9958d3/html5/thumbnails/6.jpg)
Apical Meristems
![Page 7: Seedless Plants](https://reader030.vdocuments.site/reader030/viewer/2022032611/568132ac550346895d9958d3/html5/thumbnails/7.jpg)
Multicellular Dependent Embryos
![Page 8: Seedless Plants](https://reader030.vdocuments.site/reader030/viewer/2022032611/568132ac550346895d9958d3/html5/thumbnails/8.jpg)
Alternation of Generation
![Page 9: Seedless Plants](https://reader030.vdocuments.site/reader030/viewer/2022032611/568132ac550346895d9958d3/html5/thumbnails/9.jpg)
Walled Spores produced in Sporangia
![Page 10: Seedless Plants](https://reader030.vdocuments.site/reader030/viewer/2022032611/568132ac550346895d9958d3/html5/thumbnails/10.jpg)
Other Adaptations
![Page 11: Seedless Plants](https://reader030.vdocuments.site/reader030/viewer/2022032611/568132ac550346895d9958d3/html5/thumbnails/11.jpg)
Adaptations in Shallow Water Algae
Subjected to occasional drying Protection of gametes and embryos in
gametangia Sporopollenin
![Page 12: Seedless Plants](https://reader030.vdocuments.site/reader030/viewer/2022032611/568132ac550346895d9958d3/html5/thumbnails/12.jpg)
![Page 13: Seedless Plants](https://reader030.vdocuments.site/reader030/viewer/2022032611/568132ac550346895d9958d3/html5/thumbnails/13.jpg)
Classification of Seedless Plants
Nonvascular Seedless plants– Bryophyta
Mosses– Hepatophyta
Liverworts– Anthocerophyta
Hornworts
Vascular Seedless plants– Lycophyta
Club mosses– Psilophyta
Whiskferns– Spenophyta
Horsetails– Pterophyta
Ferns
![Page 14: Seedless Plants](https://reader030.vdocuments.site/reader030/viewer/2022032611/568132ac550346895d9958d3/html5/thumbnails/14.jpg)
Nonvascular Seedless Plants
Plant is a thallus (no vascular tissue)
– no true leaves, roots, stems Embryophytes
– gametangia (antheridium and archegonium)
– sporangium (produces spores)
![Page 15: Seedless Plants](https://reader030.vdocuments.site/reader030/viewer/2022032611/568132ac550346895d9958d3/html5/thumbnails/15.jpg)
Hepatophyta
Liverworts– Two forms
leafy (80%) thalloid (20%)
![Page 16: Seedless Plants](https://reader030.vdocuments.site/reader030/viewer/2022032611/568132ac550346895d9958d3/html5/thumbnails/16.jpg)
Hepatophyta
Liverworts– Reproduction
asexual (gemmae cups)
sexual
![Page 17: Seedless Plants](https://reader030.vdocuments.site/reader030/viewer/2022032611/568132ac550346895d9958d3/html5/thumbnails/17.jpg)
Anthocerophyta Hornworts
– Similar to liverworts except for sporophytes
– Most closely related to higher plants
![Page 18: Seedless Plants](https://reader030.vdocuments.site/reader030/viewer/2022032611/568132ac550346895d9958d3/html5/thumbnails/18.jpg)
BryophytaMosses
![Page 19: Seedless Plants](https://reader030.vdocuments.site/reader030/viewer/2022032611/568132ac550346895d9958d3/html5/thumbnails/19.jpg)
Bryophyta
Mosses
![Page 20: Seedless Plants](https://reader030.vdocuments.site/reader030/viewer/2022032611/568132ac550346895d9958d3/html5/thumbnails/20.jpg)
Vascular Seedless Plants Formation of vascular tissue
– Xylem (water)
– Phloem (food)
– True leaves, roots, and stems Lignin Sporophyte generation dominate Sperm with flagella
![Page 21: Seedless Plants](https://reader030.vdocuments.site/reader030/viewer/2022032611/568132ac550346895d9958d3/html5/thumbnails/21.jpg)
Lycophyta
Lycophytes– true leaves
microphylls– true stems– true roots– sporophylls
leaves that produce spores
![Page 22: Seedless Plants](https://reader030.vdocuments.site/reader030/viewer/2022032611/568132ac550346895d9958d3/html5/thumbnails/22.jpg)
Psilophyta
Whisk Ferns– no true leaves– no true roots
![Page 23: Seedless Plants](https://reader030.vdocuments.site/reader030/viewer/2022032611/568132ac550346895d9958d3/html5/thumbnails/23.jpg)
Sphenophyta
Horsetails– true leaves
microphylls– true stems
silica– true roots
![Page 24: Seedless Plants](https://reader030.vdocuments.site/reader030/viewer/2022032611/568132ac550346895d9958d3/html5/thumbnails/24.jpg)
Division: Pterophyta
![Page 25: Seedless Plants](https://reader030.vdocuments.site/reader030/viewer/2022032611/568132ac550346895d9958d3/html5/thumbnails/25.jpg)
Division: Pterophyta
![Page 26: Seedless Plants](https://reader030.vdocuments.site/reader030/viewer/2022032611/568132ac550346895d9958d3/html5/thumbnails/26.jpg)
Fern Life Cycle