Praxis Middle School Science: Plant Structures & Functions 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!

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Question 1 1. What layer of the leaf is responsible for photosynthesis?

Question 2 2. The release of water in plants, causing the change in water potential allowing for the movement of water in the xylem, is best known as:

Question 3 3. Plants that have cones rather than flowers for seed production are best known as:

Question 4 4. Palm trees have parallel veins, long leaves, vascular tissue, and flowers with groups of three petals. Based on this information, palm trees can best be classified as:

Question 5 5. When a seed germinates, what causes the roots to orient themselves downward?

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Question 6 6. Which hormone is most responsible for stem elongation, root growth and cell differentiations?

Question 7 7. According to the cladogram shown, which organisms are most closely related?

Question 8 8. Plants that have two cotyledons and flowers in groups of four or five are best known as:

Question 9 9. Some plants, such as daffodils and tulips, may produce both sexually and asexually. When these plants produce through vegetative propagation, from what structure will new plants develop?

Question 10 10. Xylem is composed of dead cells lined end to end. What is responsible for making these cells strong and durable even though they are no longer living?

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Question 11 11. Which structure associated with phloem carries out metabolic activities for the phloem?

Question 12 12. Which of the following best describes the process of trees releasing water vapor?

Question 13 13. The veins in a leaf contain tissue that is also known as:

Question 14 14. Which plant hormone is used to promote fruit ripening?

Question 15 15. Which of the following is the best example of a sugar source?

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Question 16 16. The individual units of xylem that have tapered ends are called:

Question 17 17. Dwarf species of plants can be treated with _____ in order to grow to a normal height.

Question 18 18. Which of the following terms best describes a graphic display of the evolutionary relationships for organisms with a shared common ancestor?

Question 19 19. Some plants, such as strawberries, develop new flowering stems through the use of aboveground horizontal stems. Which term best describes these structures?

Question 20 20. What term describes the process of converting atmospheric nitrogen to ammonia?

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Question 21 21. The relationship between nitrogen-fixing bacteria and legumes can best be described as:

Question 22 22. What structure is labeled in this diagram?

Question 23 23. Why are mosses, hornworts and liverworts small?

Question 24 24. Organisms that fix atmospheric nitrogen into a usable form for plants and humans are:

Question 25 25. Which term best describes a group of species without a known common ancestor?

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Question 26 26. In what type of environment is vegetative propagation the most advantageous?

Question 27 27. Earth's atmosphere is made up of several components including carbon, oxygen, and nitrogen. About how much of the atmosphere is nitrogen?

Question 28 28. Which of the following is an example of a negative tropism?

Question 29 29. What causes a lateral branch to grow upwards?

Question 30 30. What two factors are mainly responsible for the movement of water from the roots up through the leaves?

Praxis Middle School Science: Plant Structures & Functions 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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