Question

7. In the figure below please calculate the missing values. (A) Pure water Pure water Y=0 MPa Y = 0 MPa ww-Y+Y = 0 MPa (C) Flaccid cell dropped into brackish water Flaccid cell Y = 0 MPa Y = -0.437 MPa Y MPa Cell after equilibrium Y- Y V =Y -Y (B) Brackish water (D) Turgid cell (from above after equilibrium) dropped into salt water Turgid cell Saltwater Brackish water Y = 0 MPa Y = -0.244 MPa Ww=Y+YS -0-0.244 MPa =-0.244 MPa Cell after equilibrium Y = 0 MPa Y = -1.137 MPa Y -1.137 MPa Wp = 9w-Y, 8. A relatively new field of plant research, known as phytoremediation, involves the use of trace element accumulating plants to remove inorganic pollutants from the environment. What elements might environmental biologists be interested in removing with this technique? Why are these toxic? How would the remediating plants avoid being poisoned themselves? (Please explain specific mechanisms in your answer.)

Could you please answer these questions. Thank you in advanced!

Answer 1

(o) Flaccid cell doopped into boradesh water. (A) pure water Фе: orifa 4 oripa 4 w = 4 p+ Ys = 0 MPa. Yp 0 MP Flaccid cell Yw=-0.439 MPa ww: -0.437 ripa (B) Brackish Wales cell aber equilibrirem. WASE1 EAST STAHON . Wuns all ni 4p omia Pw 9w.ebrackish wallers - Yw cell atter egus) 4 --0-24.4 Mfu -0.0241 - (-0.193) 4 w = Up + 4s Ww -0.168 M1807 4 -0-94-4-M Y = 4s (Flaccid ren - Ysq Bociclish wate) -0.4.37 - (- 0.2-4) 4s - 0.193 mp4 so, VeYw-4,3 -0.168-(-0.193) pups 0.09 MPa Turgid cell (from above after equilibrium dropped in salt on 4w: -0.168 rral Insgel! U -0.193 M. Pa 74 - OM 14 I salt water Y p = 0.00 Pa Uw : -1.137.14 cell after équilibrium Ww 4w. Esalt water is - 4 wc predgid cell) 1.139 -(-0.168) Twit -0.969 Mia] 4's 's cruggiden - Ysasalt ulet tar ) -0.193:- (-1.39) 0.94-4- 50, Westw-4 -0.969 -0.944 4 p = -1.91 mpa

-> Environmental biologist are mainly interested in demoving following elements, components. .. → Heavy Metals like Hj, poi Ar, an elr which are in high concentration in an argoo . - Radionuclides - Pesticides - Explosives ofe. (vol) → Volatile organic compounds as Those all are toxic to heermons very well as animals 4 for Ecosystem functioning, > All are toxic with having different mode of actions like heavy metals leads to intrapt enzymatic actions, Rodionuclides cause il mutations pesticides are specific enzyme inhibitors Explosives i voc. are very much hazardous to environment s scientist are using different different pheto. remediation techniques for like different Rhizosphere biodegradation ! toxics phyto stabilization, phyto-acumulation, Hydroponic system, Phyto volatization,... phyto degradation etc. - In these all technique mode of action is different & even if toxic is arrimulating in plant, then it is spreaded in shoots & leaves in less concentre- tion so that it won't affect plant, but Yes, if they are in more concontration than a Plant will die. so optimization is required in chossing contaminated area is remediating plant. N ESE