BIO 152 EXAM 3 - Key Topics PDF

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BIO 152 EXAM 3: Basic Vocab: Xylem Dead cells, negative pressure, transports water. Phloem Alive cells, positive pressure, transports sugar. Transpiration Plants release water from stomates; allow carbon dioxide in, pulls water from roots through xylem. Gametophyte Reproductive part of the plant; sperm/egg/pollen. Sporophyte Adult plant (2n). Totipotent Cell that can become any tissue (most plant cells). Angiosperm Reproduction Reproduction of a flowering plant. Alternation of Generations Method of reproduction; sporophyte to meiosis to gametophyte to fertilization to sporophyte. Meiosis Sporophyte to gametophyte; 2n to 1n. Fertilization Gametophyte to sporophyte; 1n to 2n. Germination When seed sprouts (stops relying on endosperm). Pollination Pollen lands on flower and grows down to the ovule; just before fertilization. Ploidy Number of copies of chromosomes in each cell (1n, 2n, 3n). Endosperm Provides nutrients for embryo until germination. Segmentation Division of body into segments. Bilateral Symmetry Top and bottom symmetry. Radial Symmetry Top, bottom, front, and back symmetry....