#5036 Daily Warm-Ups: Nonfiction Reading teacher Created Resources #5036 Daily Warm-Ups: Nonfiction Reading Warm-Up
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10 The Heaviest Flying Bird ©Teacher Created Resources 51 #5036 Daily Warm-Ups: Nonfiction Reading Warm-Up Check Your Understanding / 4 Name ______________________________________________ 1. From the context of the passage, what is the best meaning of bioluminescence? a. reflected light c. light created by living organisms b. light from the stars d. starlight 2. Which of these defensive light effects is used by squid? a. false eyespots c. squirting light-producing chemicals into the water b. zebra stripes d. all of the above 3. Using the context of the passage, which land-based insect is bioluminescent? a. housefly c. squid b. cricket d. firefly 4. Which of the following do not help create bioluminescent effects in ocean creatures? a. bacteria c. clouds b. special cells d. all of the above In nature, light can come from the sun, the stars, lightning, and wildfires. Even the reflection from the moon provides light. However, another source of light can be produced in the oceans from living animals that create their own light. This process is called bioluminescence, or “light from life.” Animals that make their own light are called bioluminescent. Fireflies are an example of insects living on land that make their own light, but most of these creatures live in the oceans. There are pencil-point-sized creatures that glow when they are disturbed by anything in the sea, from a boat to a bubble. Some shellfish the size of birdseed flash blue lights to attract mates. The light organ of a flashlight fish is about the size of a bean. However, it carries about a billion bacteria. They provide light for it to hunt for food. Many deep-sea fish have lights on their bellies, sides, or tails. Some jellyfish glitter with their own light, which they use to attract prey or blind an enemy. Squid are masters of deception with light. They are able to create many special light effects with bacteria living on their skin and special cells of different colors. They can make false eyespots, zebra stripes, silver flanks, and glowing eyebrows. They can even squirt light-producing chemicals into the water to hide a quick getaway from their enemies. Scientifically Speaking Download 10.24 Kb. Do'stlaringiz bilan baham: |
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