Biology 5090/21 — October/November 2014
Cambridge O-Level · Theory · worked solutions for every part, with the mark scheme
Topics Respiration · Human Nutrition · Transport in Flowering Plants · Plant Nutrition · Inheritance · Excretion · +4 more
Fig. 1.1 shows a section through a plant organ with a very small pipette (micropipette) inserted into tissue A.
Name the plant organ shown in Fig. 1.1.
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Name the tissue labelled A.
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The micropipette is used to take samples from tissue A at regular intervals over a 24-hour period. These samples are then analysed for their content. Explain how this might provide information about the rate of photosynthesis in the plant.
Some insects have mouthparts similar to the tube of the micropipette. Suggest reasons for these insects using tissue A to supply their food.
The rest of this paper
8 more questions- Q2Human Nutrition · Excretion · Respiration12M
- Q3Sexual Reproduction in Humans10M
- Q4Human Gas Exchange · Respiration7M
- Q5Human Nutrition11M
- Q6Inheritance10M
- Q7Transport in Flowering Plants · Human Nutrition10M
- Q8Cell Division and Reproduction · Inheritance10M
- Q9Plant Nutrition · Movement Into and Out of Cells10M