February 7 - February 7 Test: CH. 7, ch.9, ch.10, part of...

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February 7 Test: CH. 7, ch.9, ch.10, part of ch.36, first part of ch.37 NOT ON TEST Xerophyte: dry climate plants o Thickened cuticle, multi-layer epidermis (prevent water loss), stomata in little pits Water transport from roots to aerial parts of plant Sugar transport: flow to different parts of plants o Sugar gets loaded in phloem cells – red and blue light to start photosynthesis o Phloem in source leaves send sugar to the same side of the plant Sugar passes vertically through pores in the wall between sieve tube members Phloem: composed of sieve tube members and companion cells Phloem and xylem are close together Phloem: higher concentration of sugars than area around it o Companion cells have pumps to allow the active transport of sugar from mesophyll into companion cell and then through plasmodesmata into phloem Active transport called secondary active transport or co-transport Pumping protons (H+) out of cell, another allows protons to enter
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February 7 - February 7 Test: CH. 7, ch.9, ch.10, part of...

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