GCSE Biology – Plant hormones

Last updated: 30/05/2020

AQA GCSE Science – Biology higher Homeostasis and response GCSE Biology – Plant hormones

Learning Objectives

-I can explain the role and mechanism of gibberellins
-I can explain the role and mechanism of ethene
-I can explain the role and mechanism of auxins

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Question 1 of 25

1. Question
What type of organism are gibberellins found in?
- Plants
- Plants + animals
- Animals
- Mammals
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Question 2 of 25

2. Question
What type of chemical are gibberellins?
- A hormone
- An enzyme
- A carbohydrate
- A salt
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Question 3 of 25

3. Question
What type of hormone are gibberellins?
- Plant
- Human
- Enzyme
- Animal
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Question 4 of 25

4. Question
What do gibberellins do?
- Initiate seed spreading (germination)
- Ripen fruits
- Make fruits grow more quickly
- Make cell division occur more quickly
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Question 5 of 25

5. Question
What industry are gibberellins used in?
- Brewing
- The technology industry
- The building industry
- The farming industry
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Question 6 of 25

6. Question
Why are gibberellins used in brewing?
- They speed up germination of barley seeds
- They slow down germination of barley seeds
- They make the barley plant grow more quickly
- They make the barley plant grow more slowly
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Question 7 of 25

7. Question
What else are gibberellins used for?
- Promoting flowering and increasing size of fruit
- Stopping flowering
- Decreasing the size of fruit
- Rooting powders and selective herbicides
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Question 8 of 25

8. Question
What type of chemical does ethene act as?
- A hormone
- A carbohydrate
- A salt
- An enzyme
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Question 9 of 25

9. Question
What does ethene do?
- All of these answers
- Makes fruits grow more quickly
- Makes cell division occur more quickly
- Ripens fruits
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Question 10 of 25

10. Question
What industry is ethene used in?
- The food industry
- The housing industry
- The building industry
- The technology industry
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Question 11 of 25

11. Question
What is ethene used for?
- Ripening fruit quickly
- Keeping fruit unripe
- Rooting powders
- Selective herbicides
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Question 12 of 25

12. Question
Why can farmers harvest unripe fruit?
- Ethene can be used to ripen them later
- Auxins can be used to ripen them later
- Gibberellins can be used to ripen them later
- Carbohydrates can be used to ripen them later
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Question 13 of 25

13. Question
Why is it an advantage to harvest unripe fruit?
- There will be less damage in transport
- There will be less transport needed
- There will be more damage in transport
- Transport of the fruit will be harder
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Question 14 of 25

14. Question
What type of chemical are auxins?
- A hormone
- An enzyme
- A carbohydrate
- A salt
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Question 15 of 25

15. Question
What industry are auxins used in?
- The farming industry
- The building industry
- The technology industry
- The housing industry
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Question 16 of 25

16. Question
What are auxins used for?
- All of these answers
- Rooting powder
- Selective herbicides
- Tissue culturing
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Question 17 of 25

17. Question
What are selective herbicides?
- Auxin solutions that kill weeds
- Auxin solutions that kill animals
- Auxin solutions that kill all organisms
- Auxin solutions that only kill slugs
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Question 18 of 25

18. Question
What hormone is in selective herbicides?
- Auxins
- Gibberellins
- Ethene
- Carbohydrates
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Question 19 of 25

19. Question
Why do selective herbicides contain auxin?
- Weeds absorb the auxins and then do uncontrolled growth
- Weeds absorb the auxins and then stop growing
- Slugs eat the auxins and die
- Humans eat the auxins and die
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Question 20 of 25

20. Question
What is the advantage of using selective herbicides?
- Weeds can be killed
- Plants can be killed
- Pests can be killed
- Plants can be grown quickly
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Question 21 of 25

21. Question
What is tissue culturing?
- When pieces of plant tissues are grown using nutrients
- When pieces of human tissues are grown using nutrients
- When pieces of plant tissues are grown using enzymes
- When pieces of plant organs are grown using nutrients
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Question 22 of 25

22. Question
Why are auxins used in tissue culturing?
- They make the tissue samples grow more quickly
- They make the tissue samples die
- They make the tissue samples grow more slowly
- They make the tissue samples grow
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Question 23 of 25

23. Question
What is the advantage of using tissue culturing?
- Plants can be grown quickly
- Pests can be killed
- Weeds can be killed
- Plants can be killed
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Question 24 of 25

24. Question
What is the advantage of using rooting powder?
- Plants can be grown quickly
- Weeds can be killed
- Plants can be killed
- Pests can be killed
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Question 25 of 25

25. Question
What is rooting powder?
- An auxin powder that grows stem cuttings
- An ethene powder that grows stem cuttings
- A deadly powder that kills stem cuttings
- A powder which helps to kill pests
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