BIOL 1108 Chapter Notes - Chapter 29: Tracheid, Casparian Strip, Endodermis
Document Summary
29. 1 plant structure and function: an evolutionary perspective. Land plants are a monophyletic group that includes vascular plants and bryophytes. All land plants descended from green algae. Land plants can be divided into two types: vascular plants, which can pull water from soil, and bryophytes, which cannot. Vascular plants provide almost all photosynthetic output of terrestrial environments. Vascular plants form monophyletic group, with four main subgroups. Lycophytes and ferns and horsetails are mostly small plants. Gymnosperms include conifers, angiosperms include oak trees, grasses, and sunflowers. Many bryophytes exhibit desiccation tolerance, a suite of biochemical traits that allow cells to survive extreme dehydration without damage to membranes or macromolecules. 29. 2 the leaf: acquiring co2 while avoiding desiccation. Vascular plant: aboveground, we see three major types of organ-leaves, stems, and reproductive organs-form the shoot. Roots make up fourth major organ system. Leaf is principal site of photosynthesis in vascular plants.
