GCSE Biology – Testing for starch in plants
Learning Objectives
-I can explain investigations into how and why a plant is destarched
-I can explain investigations into testing for starch
Quiz Summary
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Question 1 of 18
1. Question
What must be done to a plant before carrying out a photosynthesis practical?
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Question 2 of 18
2. Question
Where is a plant placed to destarch?
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Question 3 of 18
3. Question
When destarching a plant, how long is it kept in the dark?
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Question 4 of 18
4. Question
What is starch made from?
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Question 5 of 18
5. Question
How can you test to see if a plant has been fully destarched?
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Question 6 of 18
6. Question
What will a plant test positive for if it has photosynthesised?
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Question 7 of 18
7. Question
When testing for starch, what should a plant be placed in initially?
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Question 8 of 18
8. Question
What type of water should the plant be placed in initially?
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Question 9 of 18
9. Question
Why is the plant placed in boiling water?
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Question 10 of 18
10. Question
How long should the plant be left in water for?
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Question 11 of 18
11. Question
After placing the plant in water, what should the plant be added to?
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Question 12 of 18
12. Question
What type of ethanol should be used?
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Question 13 of 18
13. Question
What is removed when the plant is placed in ethanol?
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Question 14 of 18
14. Question
After the leaf is placed into ethanol, what should it be dipped in?
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Question 15 of 18
15. Question
Finally, what should be added to the leaf to test for starch?
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Question 16 of 18
16. Question
What is the positive test for starch?
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Question 17 of 18
17. Question
What is the negative test for starch?
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Question 18 of 18
18. Question
What colour is the iodine before testing positive for starch?
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