anonymous
  • anonymous
a drop of a 5% solution of NaCl is added to a leaf of an aquatic plant. when the leaf is viewed under a microscope, colourless region appear ath the edges of each cell as the cell membrane shrinks from the cell walls. describe what is happening and why.
Biology
  • Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
jamiebookeater
  • jamiebookeater
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
blues
  • blues
OK, this is a question about concentration gradients. An aquatic plant is used to living in water, so the concentrations of molecules inside the cells are roughly equal to the concentrations of molecules in the pond water. The 5% NaCl has a much higher concentration of molecules than pond water... Helpful?
blues
  • blues
Think about what happens when two different compartments - in this case the inside of the leaf cells and the world around it - have different concentrations of a molecule. You get flow down the concentration gradient...
anonymous
  • anonymous
so the plant will have a higher concentration than the pond water because of the NaCl ??

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

blues
  • blues
No. The relative concentration of water molecules to other molecules is roughly the same inside the plant cell and the pond water. The NaCl has a much lower concentration of water and a much higher concentration of other molecules (namely, Na and Cl ions).
anonymous
  • anonymous
okay this is like isotonic right? or am i wrong again
blues
  • blues
That is exactly the right line of reasoning. The plant cell is isotonic with the pond water. It is not isotonic with the NaCl solution - that is, there is a concentration gradient such that there is a much higher concentration of water molecules inside the leaf than in the NaCl solution. So all those water molecules flow down their concentration gradient. What does that do to the leaf?
anonymous
  • anonymous
the leaf will shrink
blues
  • blues
Exactly. The leaf cells will all shrink - but the cell walls are really stiff and won't bend. Which is what the question asks. Is it clear to you now?
anonymous
  • anonymous
yes it is clear
anonymous
  • anonymous
thank you so much
blues
  • blues
All cool. Are you ready to go on to your other questions?
anonymous
  • anonymous
yes ... i have posted it on the wall , if you could take a look on it .... it woulod really help me

Looking for something else?

Not the answer you are looking for? Search for more explanations.