1.

carry out osmosis experiment: Take four peeled potato halves and scoos each one out to make potato cups. One of these potato cups should be made from a boiled potato. Put each potato cup in a trough containing water. Now, (a) Keep cup A empty (b) Put one teaspoon sugar in cup B (c) Put one teaspoon salt in cup C (d) Put one teaspoon sugar in the boiled potato cup D. Keep these for two hours. Then observe the four potato cups and answer the following: (i) Explain why water gathers in the hollowed portion of B and C. (ii) Why is potato A necessary for this experiment? (iii) Explain why water does not gather in the hollowed out portions of A and D.

Answer» <html><body><p><strong>Answer:</strong></p><p>(i) Since <a href="https://interviewquestions.tuteehub.com/tag/sugar-1233697" style="font-weight:bold;" target="_blank" title="Click to know more about SUGAR">SUGAR</a> and salt was <a href="https://interviewquestions.tuteehub.com/tag/present-1163722" style="font-weight:bold;" target="_blank" title="Click to know more about PRESENT">PRESENT</a> in B and C respectively, <a href="https://interviewquestions.tuteehub.com/tag/water-1449333" style="font-weight:bold;" target="_blank" title="Click to know more about WATER">WATER</a> from the trough gathered in the hollowed portions of potato in B and C by the process of osmosis.</p><p>(ii) Potato A is necessary for carrying out this experiment because it acts as a control experiment. Control helps us to check what changes occurred during the course of the experiment and helps us to compare the results.</p><p>(<a href="https://interviewquestions.tuteehub.com/tag/iii-497983" style="font-weight:bold;" target="_blank" title="Click to know more about III">III</a>) Water does not gather in the hollowed portion of potato A as it was empty. Water also does not gather in the cup D because the potato used was <a href="https://interviewquestions.tuteehub.com/tag/boiled-2005463" style="font-weight:bold;" target="_blank" title="Click to know more about BOILED">BOILED</a> which makes it inactive as after boiling its protein structure were denatured, resulting in the disruption of the cell membrane.</p></body></html>


Discussion

No Comment Found

Related InterviewSolutions