STOCKSCH 100 Lecture Notes - Lecture 13: Stoma, Xylem, Phloem
14 Oct 2016
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Document Summary
Sage: promotes mental clarity, medicinal properties: soothes sore throats in tea, antibacterial, antifungal, antiviral. Stems: above-ground organs (usually, exception: potato is an underground stem (tuber) Leaves: photosynthetic organ of the plant. They produce enough food energy for the whole plant: absorb sunlight and manufacture plant sugars through photosynthesis, have unique ability to harvest light, leaf parts. Petiole: stalk that connects the leaf blade to the stem: some what translucent to light light through. More parts of a leaf: blade, petiole, midrib (and veins, leaf margin, leaf node, used for plant identification! Simple vs. compound leaves: a compound leaf may have many leaflets, parallel vein vs net vein (veins are a vascular system) Dicots often have net veins (intersecting lines) Monocots often have parallel run up, parallel to each other. Leaf arrangement on the stem: opposite, spiral, whorled. Leaves and photosynthesis: photosynthesis: process by which autotrophs convert light energy to sugars.
