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The nonvascular plants

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Presentation on theme: "The nonvascular plants"— Presentation transcript:

1 The nonvascular plants
Kingdom Plantae Multicellular Algae Bryophytes The nonvascular plants Tracheophytes Vascular plants Early vascular plants Ferns and Fern Allies Whisk ferns Club mosses Horsetails True ferns Seed plants Gymnosperms Angiosperms

2 Tracheophytes may reach more than a meter in height
Early vascular plants (Ferns and fern allies) Seed plants (Gymnosperms and angiosperms) may reach more than a meter in height contain vascular tissues tracheids in xylem phloem lignin-reinforced cell walls with true roots, stems, and leaves

3 Corn root x.s. Corn stem x.s. Corn leaf x.s. Corn stem l.s.
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4 Early vascular plants seedless leaves with waxy cuticles
Ferns and Fern Allies Lycophyta (Club mosses) Sphenophyta (Horse tails) Psilophyta (Whisk ferns) Pteridophyta (True ferns) Early vascular plants seedless leaves with waxy cuticles sporophylls with spores arranged in sori (sing. sorus) depend on water for reproduction and nourishment dominant diploid sporophyte stage

5 http://www. tomifobia. com/gallerya/pix/fiddlehead_fern1

6 Ferns and Fern Allies Lycophyta (Club mosses) Sphenophyta (Horse tails) Psilophyta (Whisk ferns) Pteridophyta (True ferns) Taxonomy whiskferns have rhizoids with mycorrhizae, stems, and leaflike structures Psilotum

7 Taxonomy abundant on early earth
Ferns and Fern Allies Lycophyta (Club mosses) Sphenophyta (Horse tails) Psilophyta (Whisk ferns) Pteridophyta (True ferns) Taxonomy abundant on early earth first forests grew to 35m tall fossilized remains  coal extant species are club mosses in moist places (Lycopodium)

8 Taxonomy Equisetum (horsetail/scouring rush) only living genus
Ferns and Fern Allies Lycophyta (Club mosses) Sphenophyta (Horse tails) Psilophyta (Whisk ferns) Pteridophyta (True ferns) Taxonomy Equisetum (horsetail/scouring rush) only living genus can grow to a meter in length leaves arranged in whorls around stems contain abrasive silica

9 Taxonomy Ferns and Fern Allies Sphenophyta (Horse tails)
Lycophyta (Club mosses) Sphenophyta (Horse tails) Psilophyta (Whisk ferns) Pteridophyta (True ferns) Taxonomy since 350 mya true vascular tissues, strong roots, underground stems called rhizomes, large leaves called fronds shade plants found in wet habitats sporangia in clusters of sori producing haploid spores released spores carried by wind/water

10 http://www. southtexascollege

11 flowering plants with protected seeds
Spermatophytes seed plants Gymnosperms naked seeds Angiosperms flowering plants with protected seeds water NOT required for gamete fertilization! gametes in sporophyte structures called flowers or cones undergo pollination to transfer sperm from male gametophyte (in pollen grain) to female gametes embryos contained within seeds with stored food supplies

12 http://www. uen. org/utahlink/tours/loadimg. cgi

13 Taxonomy Gymnosperms with vessel elements similar to angiosperms
naked seeds Gnetophytes Cycads Ginkgoes Conifers Welwitschia with vessel elements similar to angiosperms wikipedia.org , Gnetum

14 Taxonomy Gymnosperms grow very slowly and are long-lived (~1000 years)
naked seeds Gnetophytes Cycads Ginkgoes Conifers Cycas revoluta grow very slowly and are long-lived (~1000 years) palmlike plants with large cones plants are dioecious (plants have separate sexes)

15 Taxonomy Gymnosperms “living fossil” with only one extant member
naked seeds Gnetophytes Cycads Ginkgos Conifers Ginkgo biloba “living fossil” with only one extant member

16 Taxonomy Gymnosperms naked seeds Gnetophytes Cycads Ginkgos Conifers pine, spruce, fir, cedar, sequoia, redwood, yew, larch, cypress long and thin leaves with waxy cuticles and sunken stomates

17 http://sharon-taxonomy2009-p3. wikispaces. com/file/view/Life_Cycle_GS

18 Flowering plants with protected seeds
Angiosperms Flowering plants with protected seeds Monocots Dicots Characteristics Appeared on land during the Cretaceous period 135 mya Dominant and most diverse form of plants Reproductive organs called flowers with ovaries that surround and protects seeds Ovaries  fruits (tissue surrounding seeds)

19 http://www. flora. dempstercountry. org/0. Site. Folder/Flower. terms

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