Question 24
Question 24 of 40
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Older MCQs might not have the typical A, B, C, D choices. They have choices 1, 2, 3, and a combination of them is the answer. Below is the key that maps such combinations to the answer.
A 1, 2 and 3 are correct
B 1 and 2 only are correct
C 2 and 3 only are correct
D 1 only is correct
Topics Tested
7. Transport in plants
7.2. Transport mechanisms

explain how hydrogen bonding of water molecules is involved with movement of water in the xylem by cohesion-tension in transpiration pull and by adhesion to cellulose in cell walls

2. Biological molecules
2.4. Water

explain how hydrogen bonding occurs between water molecules and relate the properties of water to its roles in living organisms, limited to solvent action, high specific heat capacity and latent heat of vaporisation

4. Cell membranes and tra...
4.2. Movement into and out of cells

investigate the effects of immersing plant tissues in solutions of different water potentials, using the results to estimate the water potential of the tissues