BIOL 150 Lecture Notes - Lecture 1: Vascular Tissue, Devonian, Lignin
Document Summary
We de ne our biomes by these plants (obvious that they are obvious on out landscape) Dominate terrestrial systems in mass (remember biomes!) Photosynthetic, eukaryotic, multicellular, cellulose cell walls (not unique green algae has this too) Live primarily on land (this makes them unique) Had to undergo adaptation, have unique traits. Rst plants looked similar to green algae. Probably very small, simple and live near water. Early plants had no leaves or roots; rst to survive exposed to air. Evolution sequence: nonvascular were st diverged from green algae, then seedless vascular (see ferns below) had adaptive radiations in devonian and. Carboniferous: and then seed plants recent adaptive radiation; dominates planet, most of these evolved in devonian period (pre-modern time, seed plants are extremely species rich. Trends over time: increased branching (reproductive and photosynthetic potential, more better reproductive adaptations, change in dominant generation. Branches give more reproductive potential (more seeds) and more leaves for more photosynthetic potential.
