BIOL 1202 : Bio 1202 Test 3 Notes
Document Summary
Plants: flowers are there to attract pollinators by producing food for the pollinators. Around 130 m. y. a: charophyceans, bryophytes, pteridophytes, gymnosperms, 1 primary endosperm cell with 2 separate nuclei- identical and dikaryotic(2 nuclei) Fertilization of angiosperms: majority of its cells are diploid, gametophytes. Gametes are haploid so they only contain one version of the gene because they only have one chromosome (haploid) They die at functional maturity so they can help move water around the plant. Tracheids and vessel elements: phloem-transports sugars dissolved in water and also transports hormones-toward outside of purple region. If these cells are drowned, they cannot get the oxygen they need to make atp, so they die: three principles that cells have to choose from once they begin to differentiate: Parenchyma: characteristically thin cell walls, humans cannot break down the cell walls during digestion to get carbs out of it, perform most metabolic functions of the plant, photosynthesis-leaves, food storage (starch)-roots, synthesis and secretion, alive at maturity.
