K.C.S.E Biology Q & A - MODEL 2012PP1QN04
In an investigation, a student extracted three pieces of paw paw cylinders using a cork borer.
The cylinders were cut back to 50 mm length and placed in a beaker containing a solution.
The results after 40 minutes were as shown in the table below.
(a) Account for the results in the table above.
(b) What would be a suitable control set-up for the investigation?
(a) The solution was hypotonic/less concentrated compared to the cell sap of pawpaw cylinder cells;
The tissue/cells gained water by osmosis; becoming turgid/longer/stiff;
(b) Pawpaw cylinders of the same size/length; placed in an isotonic solution;
Boiled potato cylinders of the same size; placed in a similar solution;
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
P.O Box 1189 - 40200 Kisii
Tel: 0728 450 424
Tel: 0738 619 279
Tel: 0763 450 425
E-mail - email@example.com