biology study guide 3 - Biology Study Guide 3 Chapter 35...

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Biology Study Guide 3: Chapter 35, Plants -Plant cells: Three cell types: (carrots have all three) (are all tissues) 1. Paranchyma: round, live; lettuce, green, photosynthetic; loaded with chloroplasts and chlorophyll Chlorophyll: type A is green (four types) Photosynthesis occurs around 680 and 700 nm wavelengths of light 2. collenchyma: live, angular; develop secondary cell walls, plaque, secondary growth Provide flexible support without restraining growth; can elongate 3. sclerenchyma: dead (cellulose, wood) lignified; support Two types: sclereids (pear, sharp, star shaped) and fibers (anything with secondary growth, long and skinny) Secondary walls of cells contain a lot of lignin (indigestible strengthening polymer) Cannot elongate, occur in parts of plant that have stopped growing in length Fibers (cotton) and sclerids (pear) Ex of sclerids: raphides, found in rhubarb jack in the pulpit (arisaema triphyllum) Draw picture -fibers; can get from vegetative part of plant or fruit (clothing) -types of plant tissue: (draw) 1. Dermal: protective 2. Ground (fundamental) (internal to vascular tissue = pith, external to vascular tissue =
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  • Fall '12
  • JeffreyMeunier
  • phloem, Plant anatomy, cork cambium, sieve tube member

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