Red Crab Migration Quiz

Which idea is best expressed in the cartoon at the end of the selection?

• Red crabs shed their shells many times during their life.

• More than 100 crab species live on Christmas Island.

• Red crabs rely on their instincts during their migration.

• Female red crabs can produce as many as 100,000 eggs.

Read the origin of the word navigate. This information helps the reader understand that navigate in paragraph 3 means —

• overcome problems

• accomplish a difficult goal

• desire a leading role

• find the way to a destination

The author included paragraph 1 in the selection most likely to —

• provide background information about the home of the red crabs

• explain why it is important for the red crabs to reach the ocean

• provide reasons for visiting Christmas Island during the red crab migration

• explain why Christmas Island is a perfect place for red crabs to live

Which sentence from the selection supports the idea that Christmas Island is a special place?

• The red land crab makes up the largest population of the land crab species.

• The island boasts an array of exotic plants and animals, some of which are found nowhere else in the world.

• Only 1,500 or so people lived on the island as of 2010.

• Christmas Island is an Australian territory in the Indian Ocean.

In paragraph 2, the word treacherous means —

• quick

• unexpected

• dangerous

• questionable

Which detail from the selection supports the idea that the island benefits from the red crabs?

• Millions of red crabs live in the rain forest that grows on the island.

• The red crabs lay their eggs along the shore of the island.

• The red crab migration attracts many visitors who spend money on the island.

• The red crabs cover roadways during their migration.

Which of the following best summarizes Red Crab Invasion?

• Christmas Island is home to more than 100 types of crabs, including the red crab, which migrates each year and impacts the lives of island residents.

• The red crabs of Christmas Island spend their lives in the rainforest and only come out when they need to find food.

• The red crab migration is a dangerous journey that results in many crabs being eaten by predators before they can lay their eggs.

• Christmas Island is a popular tourist destination where people can see many types of animals, including red crabs.

Which statement best explains the organizational pattern of the article?

• By comparing the migration of red crabs to other animal migrations.

• By presenting the events of the migration in chronological order.

• By listing the advantages and disadvantages of the red crab migration.

• By explaining problems caused by the migration and how people solve them.

Why does the author include paragraph 1 in the passage?

• To explain why red crabs are important to Christmas Island’s environment.

• To give background information about Christmas Island before describing the migration.

• To show why the red crabs are different from other species of crabs.

• To describe why Christmas Island is a dangerous place for red crabs.

What is the controlling idea of the selection Red Crab Invasion?

• The red crab migration is a unique natural event that plays an important role in the ecosystem and affects the lives of people on Christmas Island.

• The red crabs of Christmas Island face many obstacles, including predators and dehydration, during their journey to the ocean.

• Christmas Island is home to many different species of crabs, making it one of the most diverse habitats in the world.

• The people of Christmas Island struggle to control the red crab migration because it disrupts their daily activities.