3. Movement into and out of cells
A section of Biology, 5090
Listing 10 of 170 questions
shows a plant in a beaker containing a solution of dye. shows the tissues of the same plant as they would appear if a cross section is taken at X. cover which supports the stem solution of dye X cross section at X, magnified Fig.1.2 On , shade the tissue that would be most heavily stained by the dye. Name this tissue Explain the processes occurring in the plant that cause the dye to move upwards through the stem. Examiner’s Use Describe the process responsible for the uptake of the dye into the roots of the plant. Suggest and explain what would happen to a plant if its roots are submerged in a concentrated salt solution for six hours.
5090_w07_qp_2
THEORY
2007
Paper 2, Variant 0
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shows a plant and the position in which it grows in the dead leaves that collect where two branches of a tree join. roots penetrating dead leaves aerial roots, green in colour and covered by spongy absorbent tissue dead leaves collecting where branches join thick canopy of leaves State two ions that the roots of the plant will absorb from the dead leaves. For each ion, state its importance to the plant. ion 1 importance ion 2 importance Explain how the ions you have mentioned in are made available to the plant from the dead leaves. Suggest and explain why the aerial roots of the plant are green and covered with a spongy absorbent tissue. green covered with a spongy absorbent tissue
5090_w12_qp_22
THEORY
2012
Paper 2, Variant 2
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Questions Discovered
170