Take 5 2/14/11 How do non-seed plants reproduce?

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Presentation transcript:

Take 5 2/14/11 How do non-seed plants reproduce? What needs to present in order for non-seed plants to reproduce? Why are seeds a more effective means or reproduction? spores water Protects the embryo Aid in dispersal Provide food for embryo Keeps embryo from drying out

3 NONVASCULAR PLANTS

BRYOPHYTA ex: Sphagnum (peat moss) ex: “Moss” Most familiar Small plants with leafy stems Leaves are 1 cell thick Use rhizoids to anchor Dense carpet Slows erosion

MOSS

BRYOPHYTA http://www.youtube.com/watch?v=AAgPXZuwSR0 http://videos.howstuffworks.com/discovery/30695-assignment-discovery-bryophytes-video.htm Assignment Discovery: Mosses (1.55) http://www.youtube.com/watch?v=jcWYAnmm-QE MOSS REPRODUCTION (1.03) http://www.youtube.com/watch?v=AAgPXZuwSR0 Camping Vol 6

HEPATICOPHYTA “Liverworts” Ex: Marchantia Leafy liverworts have flat stems, leaves arranged in 3 rows, rhizoids Body of thallose liverwort = “thallus” Categorized as leafy or thallose Flattened body resembles animal liver Moist habitat Grows in clumps/masses

LIVERWORTS

LIVERWORTS

HEPATICOPHYTA http://www.youtube.com/watch?v=ALGDLzWcvnU Airborne sperm of liverworts http://www.britannica.com/EBchecked/topic-video/463192/68471/Bryophytes-such-as-mosses-and-liverworts-are-the-most-primitive VIDEO COMBINING LIVERWORTS AND MOSSES AS BRYOPHTES (3.28)

ANTHOCEROPHYTA “Hornworts” Smallest division Thallose bodies Sporophyte resembles a horn Sporophyte produces most of food for both generations

HORNWORTS

HORNWORTS

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