Biology 2217B Lecture : Lectures 1 - 6 Notes
17 May 2013
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Has to do with ions leading to potassium gated channels - related to osmolarity. Resurrection plant: can preserve itself over a long period of time, closes up when no water is present and vice versa. Venus fly trap when an insect lands on the leaf, little hairs stimulate the plant to close, trapping the insect inside; enzymes are then released, completely consuming and digesting the insect. Low in nutrients therefore, most nutrients and proteins are obtained from the insects that are consumed: for example, the pitcher plant insects walk on the edge of the plant and fall inside. Used in cases where crops need to be protected (for example, chrysanthemum is used to keep rabbits away) Forms a specialized structure called hostori: green = hemi-parasite, no color = holo-parasite. Obtains/steals water from neighboring plants/trees, attacks the roots or vascular tissue to obtain water that it needs. Lichens are a symbiotic association of two different organisms not a plant.
