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NON-VASCULAR PLANTS. JRMG 2010 Bio1. WHAT ARE PLANTS?????. KINGDOM PLANTAE. Multicellular eukaryotes CW: cellulose Chlorophyll a and b “STATIONARY ANIMALS EAT SUNLIGHT” Immobile Alternation of Generations. Basic Plant LIFE CYCLE. NEEDS of PLANTS. Sunlight Water Minerals Gas.

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Non vascular plants

NON-VASCULAR PLANTS

JRMG 2010

Bio1



Kingdom plantae
KINGDOM PLANTAE

  • Multicellular eukaryotes

  • CW: cellulose

  • Chlorophyll a and b

  • “STATIONARY ANIMALS EAT SUNLIGHT”

  • Immobile

  • Alternation of Generations



Needs of plants
NEEDS of PLANTS

  • Sunlight

  • Water

  • Minerals

  • Gas


Overview of plant evolution
Overview of Plant Evolution

  • Algae- water

  • Land plants

    • Light and CO2

    • Water and Minerals

    • Shoot system

      • Cuticle (2º product)

      • Lignin

      • Sporopollenin*



Plant evolution as embryophytes
PLANT EVOLUTION:AS EMBRYOPHYTES

  • Gametes: non-aquatic environment

  • Embryos: protected

  • From EARLY PLANTS:

    • Gametangia

      • Production, protection, site of fertilization

    • Transformation to Embryophytes


Evolutionary origins
EVOLUTIONARY ORIGINS

  • Oxygen existence

    • Algae

    • Photosynthetic prokaryotes

  • Ancestral algal species

    • Charophytes

  • Cooksonia


Charophytes
CHAROPHYTES

  • branch of Phylum Chlorophyta

  • plant ancestor

Chara braunii


Charophytes1
CHAROPHYTES

Chaetosporidium

Choleochaete orbicularis




History of terrestrial adaptation
History of Terrestrial Adaptation

Charophytes: aquatic ancestors

  • 1ST ADAPTATION: Spores→Sporopollenin

    • Jacketed gametangia

  • EMERGENCE OF BRYOPHYTES


Non vascular plants

Sporopollenin

Cuticle



Non vascular plants

  • 2ND ADAPTATION: Vascular tissues

  • EMERGENCE OF VASCULAR PLANTS


Non vascular plants

  • 3RD ADAPTATION: ORIGIN OF SEED

  • Colonization of land plants

    • Naked seeds

  • EMERGENCE OF GYMNOSPERMS


Non vascular plants

  • 4TH ADAPTATION: Modification of seeds

    • Protective coat

  • EMERGENCE OF ANGIOSPERMS


Breakdown of k plantae
BREAKDOWN OF K. PLANTAE

  • Non- vascular plants

    • P. Bryophyta, P. Hepatophyta and P. Anthocerophyta

  • Vascular plants/ TRACHEOPHYTA

    • Gymnosperms

    • Angiosperms


Non vascular plants1
NON- VASCULAR PLANTS

  • Without vascular tissue

  • Life cycle depends: water (reproduction)


Phylum bryophyta
PHYLUM BRYOPHYTA

  • Environment: water

  • Moist habitat and nutrient poor soil

  • Can tolerate low temp

  • STRUCTURE

    • Stalk + capsule= sporophyte

    • Leaf like and stem like structure

      • gametophyte

  • Life cycle (http://www.zo.utexas.edu/faculty/sjasper/bio213/plants.html)



Phylum hepatophyta
PHYLUM HEPATOPHYTA

  • Liverworts

  • Gametophyte: umbrella like (gametangia)

    • Archaegonium

    • Antheridium

  • ASEXUAL REPRODUCTION: Gemmae

    • Haploid cells

    • Gemmae cups



Non vascular plants

Female gametophyte

Male gametophyte





Phylum anthocerophyta
PHYLUM ANTHOCEROPHYTA

  • Damp soil

  • Sporophyte: horn-like

  • Sporophyte reamins attached to the gametophyte

    • divides continuously

  • Large chloropast/cell


Non vascular plants

Anthoceros

Dendroceros



Non vascular plants

LIFE CYCLE:

SEXUAL