Dr. Mitch Pavao-Zuckerman Department of Ecology and Evolutionary Biology 621-8220 [email protected]Office hours: Biosciences West 431 W and F 1-2 p.m. or by appointment Diversity of Plants Diversity of Plants (Fig 29.4) Ancestral Alga Chlorophyta Nontracheophytes Nonseed Tracheophytes Gymnosperms Angiosperms The Transition to Life on Land The Vascular Plants The Seed Plants The Flowering Plants Monophyly • Monophyletic group – includes the most recent common ancestor and all decendents • These are NOT monophyletic: Green Plants (viridiphytes) are a monophyletic group • Green Plants include the Chlorophytes (green algae) • Other green algae • and the land plants Embryophytes (Land Plants) Land Plants are also a monophyletic group • Photosynthetic eukaryotes that use chlorophyll a and b and store carbohydrates starch • Resting embryo with placental connection to the parent.
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Dr. Mitch Pavao-Zuckerman Diversity of Plants · 2006-01-26 · 4 Vascular Plants •The diploid generation became LARGER and independent of the haploid generation. Figure 28.19 Figure
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Dr. Mitch Pavao-ZuckermanDepartment of Ecology and Evolutionary Biology
[email protected] hours: Biosciences West 431W and F 1-2 p.m. or by appointment
Diversity of Plants
Diversity of Plants (Fig 29.4)
Ancestral Alga Chlorophyta
Nontracheophytes
Nonseed Tracheophytes
Gymnosperms
Angiosperms
The Transition to Life on Land
The Vascular PlantsThe Seed PlantsThe Flowering Plants
Monophyly• Monophyletic group – includes the
most recent common ancestor and all decendents
• These are NOT monophyletic:
Green Plants(viridiphytes) are a monophyletic group
• Green Plants include the Chlorophytes (green algae)
• Other green algae• and the land plants
Embryophytes (Land Plants)
Land Plants are also a monophyletic group
• Photosynthetic eukaryotes that use chlorophyll a and b and store carbohydrates starch
• Resting embryo with placental connection to the parent.
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The Conquest of the LandHistory of plants on land• 500 mya - a few algae and lichens.• By 460 mya - primitive Land Plants, • By 425 mya - Early Vascular Plants