Author's Questions and Answers Practice Exercises (page 3)

Updated on Sep 29, 2011

Practice 3: Chameleons: Quick-Change Artists 

Read the selection, and then answer the questions that follow.

(1) Why do chameleons change color? Some people think it's an example of natural camouflage that lets chameleons blend into their environment. But that's not really why. They change color as an emotional reaction to life!
(2) How does a chameleon change color? The animal's transparent outer skin separates light rays, like a prism. Underneath are two layers of cells with red and yellow specks. Under that is a cell layer that reflects blue and white light. Amounts of heat and light, and the animal's emotions, expand or contract the cells. How they line up determines the chameleon's color!
(3) If a chameleon's frightened or angry, it turns yellow. When it's happy, it turns green. When it's cold, the animal flattens its body to capture the sun's rays, and turns brown. When it's sleeping, a chameleon turns gray. So even though it doesn't really change color as camouflage from predators, it often works that way. A happy chameleon can hide in green grass and a sun-soaking chameleon can safely hide on a brown tree trunk!
12. Which answers the author's first question?
a. Some people think the color change is natural camouflage.
b. They change color as an emotional response.
c. Some change as they get older.
d. Most change only when they are wet.
13. What is another way to ask the author's second question?
a. What color is a chameleon's outer layer of skin?
b. How does sound affect a chameleon?
c. Why are some chameleons green?
d. How do a chameleon's skin cells affect its color?
14. Which would be the best question for an author to ask in the last paragraph?
a. Where do chameleons live?
b. When does a chameleon sleep?
c. Which color is a happy chameleon?
d. What predators hunt for chameleons?


1. c
2. b
3. d
4. c
5. a
6. There are many listed; here is one possible answer: Humans have trained dogs to hunt, herd, guard, and guide the blind
7. b
8. d
9. c
10. d
11. a
12. b
13. d
14. c
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