Req Prac Questions Flashcards

(4 cards)

1
Q

A student used chromatography to separate the different photosynthetic pigments in a chlorophyll solution.

A
  1. Draw a line on the (chromatography) paper (using ruler and pencil);
  2. (Use pipette to add chlorophyll solution to the origin (Line)
  3. Add solvent below the origin
  4. Mark (position) where solvent reaches top
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2
Q

The student wanted to determine the rate of water loss per mm2 of surface area of the leaves of the shoot in Figure 5. Outline a method she could have used to find this rate. You should assume that all water loss from the shoot is from the leaves.

A

Measure the area of both sides of the leaves by drawing around them on graph paper and counting the squares.
Divide the rate of water loss by the total surface area of the leaves

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3
Q

The rate of water movement through a shoot in a potometer may not be the same as the rate of water movement through the shoot of a whole plant. Suggest one reason why.

A

The whole plant has roots but the shoot does not

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4
Q
A
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