Wednesday, March 17, 2010

Best of luck kids.....

2 comments:

  1. the effect of root pressure in transport of water in plant is more important at night. why??????????????????

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  2. i will not give u the straight answer, rather give you some hints to guide you to the answer

    1. think about why transpiration pull is more effective in mornings ( relate it to the stomata - opening and closing) ......hence root pressure will be more effective in nights.

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