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4.6 Food reserves in germinating seeds
Exam question
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Explain how starch stored in a seed provides energy for the seedling.
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Total for this question: 3 marks
4.6 Food reserves in germinating seeds
Exam question
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Which enzyme digests starch in a germinating seed?
(1)Total for this question: 1 mark
4.6 Food reserves in germinating seeds
Exam question
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Describe how to show that germinating seeds produce amylase using starch agar.
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Total for this question: 3 marks
4.6 Food reserves in germinating seeds
Exam question
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Explain why boiled seeds are used as a control in the starch agar experiment.
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Total for this question: 2 marks
4.6 Food reserves in germinating seeds
Exam question
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State what stored proteins and lipids are used for in a germinating seed.
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Total for this question: 2 marks
4.6 Food reserves in germinating seeds
Exam question
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Explain why food reserves are needed until the seedling has leaves.
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Total for this question: 2 marks
4.6 Food reserves in germinating seeds
Exam question
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Illustrative data.
| Days since soaking | Clear zone / mm |
|---|---|
| 0 | 0 |
| 1 | 3 |
| 2 | 8 |
| 3 | 14 |
| 4 | 15 |
Explain why the clear zone increases in size over the first three days.
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Total for this question: 2 marks
4.6 Food reserves in germinating seeds
Exam question
Mark points shown after marking
| Days since soaking | Clear zone / mm |
|---|---|
| 0 | 0 |
| 1 | 3 |
| 2 | 8 |
| 3 | 14 |
| 4 | 15 |
Suggest one factor that should be controlled in this experiment and why.
(2)Write your answer, then press Show model answer and tick each mark point your answer makes. Your answer is not saved.
Total for this question: 2 marks
4.6 Food reserves in germinating seeds
Exam question
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Explain why seeds that store mostly lipid can have smaller food stores than starchy seeds.
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Total for this question: 2 marks
4.6 Food reserves in germinating seeds
Exam question
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State the name of the part of a bean seed that stores food.
(1)Write your answer, then press Show model answer and tick each mark point your answer makes. Your answer is not saved.
Total for this question: 1 mark
