Page 135 - Science Course 1 (Book 1)

Mo4-L4: Lesson Review Quiz (Multiple Choice)

Directions: On the line before each question or statement, write the letter of the correct answer.
1. A Venus flytrap captures insects by responding to which type of stimulus?
A. light
B. touch
C. gravity
2. A hormone is an example of which type of stimulus?
A. chemical
B. reproductive
C. environmental
3. Plants that require 12 or more hours of darkness to flower are called
A. long-day plants.
B. short-day plants.
C. day-neutral plants.
4. What must occur for a change in the environment to be considered a stimulus?
A. The change must become permanent.
B. The change must be considered beneficial.
C. The environment must become dangerous.
D. The organism must respond to the change.
5. Which of the following is an example of a chemical stimulus?
A. light
B. touch
C. gravity
D. hormones
6. Which growth response allows plant tendrils to wrap around an object?
A. gravitropism
B. phototropism
C. thigmotropism
D. hormonetropism

Mo4-L4: Lesson Review Quiz (Completion)

Directions: On each line, write the term from the word bank that correctly completes each sentence. Each
term is used only once.
auxin ethylene gibberellin photoperiodism phototropism tropism

7. A(n) is a response that results in a plant growth toward or away from a stimulus.
8. is a plant hormone that stimulates the ripening of fruit.

9. One of the first plant hormones discovered was , which increases plant
growth by causing cells to grow longer.

10. A plant’s response to the number of hours of darkness in its environment is .

11. Applying the hormone to plants can dramatically increase the growth of
stems and leaves.

12. The growth of a plant toward or away from light is .

Short Answer

7. Evaluate the use of plant hormones to change the way plants develop.

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