8 beans increase or decrease the turgidity of pulvini

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8. Beans increase or decrease the turgidity of PULVINI cells to change the orientation of leaves. In order to raise the leaf blades to a horizontal position (as in the right side of the picture) pulvini cells at the junction between petiole and blade import sugar and potassium ions to increase their Ψ p from .40 Mpa to .75 Mpa. The pulvini cells are at equilibrium both before (leaf held more vertically) and after (leaf held horizontally) moving with an interstitial fluid that is not under pressure and has an unchanging osmotic potential of -1.25 Mpa. [ The numbers vary on the electronic version ] What is the osmotic potential of the pulvini cell when the leaf blade is horizontal? Size and Surface area 9. Use the diagram above to answer these questions. Assume relationships that fit Kleiber’s law. (circle < = or > for each ) TWO Dnus weigh < = > ONE Urb TWO Urbs weigh < = > ONE Dnu DNU pulse < = > URB pulse DNU cellular BMR < = > URB cellular BMR MR Te Urb Dnu 10 30 50 70
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Bi212 HW#1 Due Wednesday of week 3 page 6 of 6 Plant Growth and structure 10. How many leaves are drawn here? Plant Growth and Development 11a. Indicate the amount of root hairs produced by the plants below using the choices A,B or C provided on the graph above. ______ Caprice (CPC) Loss of function mutation ______ Glabra 2 (GL2) Loss of function mutation ______ Werewolf (WER) Loss of function mutation ________ A Glabra loss of function mutant plant engineered to contain a 35s::WER2 construct 11b. Add a bar to the graph above in the space indicated by the star X-axis label so that it represents a double mutant plant lacking functional versions of both CPC and GL2 genes
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