Adaptations and Survival

A tiger’s fur is orange-brown with stripes. Its fur helps it hide in a field of brown grass. When another animal comes near, the tiger can jump out of hiding and attack it. A toad’s body is brown. It blends in with brown sand. A toad can hide from predators while it looks for insects to eat. What is one way that a tiger and a toad are similar?

• Their skin is adapted for hunting at night.

• Their skin keeps them cool in the sun.

• They are both good swimmers.

• Their color helps them hide to get food.

Juan wanted to become an expert bird watcher. He decided to watch for birds in his backyard. Juan lives in a heavily wooded area that has lots of fallen trees, but not much grass and no bodies of water. Any bird living in Juan's backyard will need to be able to drill for insects in the trees.

Which bird beak is Juan most likely to see on a bird living in his backyard?

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Loggerhead sea turtles are large turtles that live in the ocean and nest on the Florida coast. The female loggerhead sea turtle lays more than 100 eggs in the beach sand. How is laying so many eggs an important adaptation that helps these turtles to survive?

• Large nests of eggs help keep the eggs warm enough to allow more turtles to hatch.

• If many turtles hatch, they can help defend each other against predators in large numbers.

• The more eggs that are laid, the greater the chance that more turtles will live to become adults.

• A large number of eggs in one place makes it possible for the mother to lie on the eggs until they hatch.

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Which of the following changes to the environment would most likely result in deer moving out of an area to a new habitat?

• A decrease in the number of predators.

• A decrease in the numbers of disease carrying insects.

• A loss of the kinds of plants they eat.

• Several winters with warmer temperatures.

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This table provides information on the populations of four different kinds of fish in a certain pond over a 4-year period.

In 2015, a factory was built on the edge of the pond. The factory pumps water from the pond, uses it for cooling, then pumps the water back into the pond at a slightly higher temperature. This environmental change, according to the data in the table, helped which fish type thrive?

• Fish type A

• Fish type B

• Fish type C

• Fish type D

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Which of the following changes to the environment would most likely be harmful to the survival of the Pacman frog?

• A summer with more rain than usual.

• An increase in the fish population.

• A winter with record cold temperatures.

• A decrease in the snake population.

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Hurricane Andrew caused many animals in the Miami Zoo to become displaced. Two of the animals that lost their homes were the collared lemming which has thick white fur and sharp claws, and the other was a marsh rabbit that has thin brown fur and is a strong swimmer. If both were thought to have sought refuge in a Florida forest, which one would have a better chance of survival and why?

• The marsh rabbit because its ability to swim helps it to scare away predators.

• The collared lemming because its sharp claws help it grip the ice when walking.

• The collared lemming because its thick, white fur helps it stay warm during the winter months.

• The marsh rabbit because its thin, brown fur helps it blend into its environment and stay cool.

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If there is a disease that kills all of the rodents living in the area, which bird species would most likely decrease?

• Species A because the rodents eat plants

• Species B because its main food source is gone

• Species C because it eats food other than rodents

• Species D because its food source includes snakes and lizards

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Both plants and animals have ________________ that help them survive in their environments.

• mimicy

• adaptions

• survival

• resemblance

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An adaption in which an organism gets protection from predators by looking like a dangerous animal is ______.

• mimicry

• adaptions

• survival

• resemblance