Bio Chap 35-36 Flashcards/Notes
Bio Chap 35-36 Flashcards/Notes BIOL1082
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This 2 page Class Notes was uploaded by Emmanuel Notetaker on Sunday February 14, 2016. The Class Notes belongs to BIOL1082 at University of Cincinnati taught by Dr. Beyette in Summer 2015. Since its upload, it has received 64 views. For similar materials see Biology II: Evolution, Physiology, and Ecology in Biology at University of Cincinnati.
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Date Created: 02/14/16
Biology Chap 35-36 flash cards/Notes Sieve-tube members: Cells of phloem; transport sucrose and other minerals. Sclerenchyma cell: (type of cell) Rigid, thick secondary walls with lignin; function only in support; may be dead at maturity. Parenchyma cell: "typical" plant cell; store starch. Collenchyma cell: Unevenly thick primary walls; support for young plants. Zone of cell division: The apical meristem of the root organizes to form the three primary meristems: protoderm, which gives rise to the epidermis; Procambium, which produces xylem and phloem; and the ground meri-stem, which produces the cortex. Zone of elongation: Cells stretch and lengthen as small vacuoles within the cytoplasm coalesce and fill with water Zone of maturation: The elongating cells complete their differentiation into the tissues of the primary body. Xylem: Transports water and dissolved materials. Blade: Expanded part of the leaf. Stem: Alternating system of nodes and internodes. Perennials: Live many years; trees, shrubs, some grasses. Epidermis: Tightly locked cells; protect from damage & pathogens; waxy cuticle. Vascular bundle: A strand of vascular tissues (both xylem and phloem) in a stem or leaf. Phloem: Transports food. Petiole: The stalk of a leaf, which joins the leaf to a node of the stem. Taproot: One large, vertical root; mostly dicots; firm anchorage; stores lots of reserve food. Protoplast: Contents of a plant cell not including the cell wall. Internode: Segment of stem between nodes. Procambium: A primary meristem of roots and shoots that forms the vascular tissue. Guard cells: Control stomata opening for gas exchange; flaccid --> stomata are closed due to lack of water Transpiration: The process by which water evaporates from a plant's leaves. Transport proteins: facilitate diffusion by binding selectively to a solute on one side of the membrane and releasing the solute on the opposite side Turgor pressure: the force directed against a cell wall after the influx of water and the swelling of a walled cell due to osmosis Biology Chap 35-36 flash cards/Notes Casparian strip: blocks minerals so that only selected ions may enter the xylem; only way past this barrier is for water and minerals to enter via the symplastic route Chemiosmosis: Links energy releasing processes to energy consuming processes; Hydrolyzes: ATP and uses energy to pump H +out of the cell Bulk flow: mechanism of translocation; pressure builds up at source and releases pressure at the sink causing source to sink flow Cohesion: the binding together of like molecules often by hydrogen bonds If a flaccid cell is placed in a solution with a lower solute concentration, the cell will ____ and become .Answer: gain water turgid ______ is the innermost layer of cells in the root cortex endodermis ____ are plants adapted to arid climates xerophytes In many plants Phloem loading requires _____ active transport Leaf orientation affects ____ light absorption Most solutes pass through ______ embedded in cell membrane answer: transport proteins The phloem allows for _______ between ____ rapid electrical communication, widely separated organs Two major compartments of plant tissues Apoplast and Symplast Water potential (Ψ) : The physical property predicting the direction in which water will flow, governed by solute concentration and applied pressure. dicots: 2 cotyledons, netlike veins in leaves, flowers in multiples of fours or fives, ring-like arrangement of vascular bundles in stems Root system: All of a plant's roots that anchor it in the soil, absorb and transport minerals and water, and store food. Roots, taproots, and lateral roots. Shoot system: The aerial portion of a plant body, consisting of stems, leaves, and (in angiosperms) flowers, buds, and node
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