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Plant Hormones Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

Page 1

Question 1 1. What is the chemical signal that causes plants to elongate and grow cells faster on the side of the plant farthest from the light?

Question 2 2. Maximizing its exposure to sunlight is important to a plant because

Question 3 3. Photoreceptors are cells that

Question 4 4. Early scientists believed that plants bent toward light

Question 5 5. Negative phototropism is ____, while positive phototropism is ____.

Page 2

Question 6 6. Phototropism is:

Question 7 7. Synthetic auxins are:

Question 8 8. Auxins are a specific group of ____ that make plant cells grow.

Question 9 9. The apical meristem is where:

Question 10 10. Auxin comes from the Greek word ____, which means ________.

Page 3

Question 11 11. Florists often use _____ to keep cut flowers prettier for longer.

Question 12 12. Which hormone is most responsible for stem elongation, root growth and cell differentiations?

Question 13 13. Dwarf species of plants can be treated with _____ in order to grow to a normal height.

Question 14 14. Unlike most other plant hormones, _____ inhibits growth and promotes seed dormancy.

Question 15 15. Which plant hormone is used to promote fruit ripening?

Page 4

Question 16 16. Gibberellins are ______.

Question 17 17. Gibberellins aid in ______.

Question 18 18. The plastids of a plant cell secrete gibberellins for a plant, like the _____ gland secretes growth hormone in humans.

Question 19 19. The double membrane-bound organelles responsible for making the plant's food are known as ______.

Question 20 20. Dwarf plants have highly _____ amounts of gibberellins.

Page 5

Question 21 21. Which of the following statements is true?

Question 22 22. The structural shape of ethylene is:

Question 23 23. Ethylene belongs to a class of molecules called:

Question 24 24. In plants, ethylene does which of the following?

Question 25 25. Which of the following are uses of ethylene?

Page 6

Question 26 26. Which plant hormone stimulates elongation and plant growth?

Question 27 27. Roots exhibit ________, while stems exhibit ________.

Question 28 28. Geotropism is the growth of plants in response to ________.

Question 29 29. Geotropism was first documented by which famous scientific figure?

Question 30 30. Statoliths are ________.

Plant Hormones Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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