BIOL 150 Chapter Notes - Chapter 34: Adventitiousness, Plasmodesma, Cellulose
Document Summary
Root system (anchors plant and takes in water and nutrients from the soil) Shoot system (harvests light and co2 from atmosphere to produce sugars) Plant body ( consists of root and shoot systems) Water and nutrients are transported from roots to shoots: sugar can be transported in both directions. Plant body is more efficient as an absorption - and - synthesis machine when it has large surface area relative to its volume. Root diversity can be analyzed on 3 levels: Phenotypic plasticity, or change in structure of an individual"s root system in response to environment. Modified roots that are specialized for unusual functions. Phenotypic plasticity (form is changeable, depending on environmental conditions) Adventitious (develop from an unusual source, the shoot system instead of the root system) Leaf (an appendage that projects from stem laterally) Axillary (or lateral) buds (from above site of leaf attachment) Apical bud (where growth occurs that extends length of stem/branch)
