K.C.S.E Biology Q & A - MODEL 2014PP1QN26
The table provided shows the concentration of sodium and iodine in sea water and cell sap of a plant.
(a) (i) Name the process through which the plant cells take up sodium ions.
(ii) Give a reason for your answer in (a) (i) above.
(b) If the plant was sprayed with a chemical that inhibits respiration:
(i) which of the two ions uptake will be affected’?
(ii) give a reason for your answer in (b) (i) above.
(a) (i) Diffusion;
(ii) Sea water contains a higher concentration of sodium ions than the cell sap;
(b) (i) Iodide ions;
(ii) Sea water has a lower concentration of iodide ions than the cell.
The plant requires energy to take up the iodide ions (by active transport);
Follow AtikaSchool.Org on our Social Channels
This gives you an opportunity to get our latest uodates, changes and firsthand information
Don't give up, Keep Searching for more
Click to set custom HTML