Reading Explorer 4, Unit 2

The author uses the word veil in paragraph C in the context of this sentence to indicate that some bioluminescent life forms use light for ______.

• attraction

• detection

• protection

• illumination

The author does not mention any ______ with bioluminescent skills.

• fungi

• mammals

• bacteria

• birds

The word They in paragraph E, line 6 refers to ______.

• certain shrimp and squid

• predators swimming below

• the upper levels of the sea

• the bellies of certain creatures

If the sun suddenly comes out from behind the clouds, certain types of shrimp ______.

• will fade

• will dive deeper into the sea

• will appear brighter

• would swim quickly

The word spinning in line 4 of the section "Stars of the Sea" indicates that dinoflagellates ______.

• move from side to side

• swim quickly

• move up and down

• spin around

Where does the Carola's parotia perform its dance?

• under a tree

• on a low branch

• on a beach

• in the crown of a tree

In which position—[1], [2], [3], or [4]—should this sentence be added to paragraph C? These colors distinguish them as some of the most dramatic and attractive birds in the world.

• [1]

• [2]

• [3]

• [4]

The author implies that if the birds of paradise had more predators, ______.

• they would not have such colorful feathers

• they would not live in groups

• they would live on other islands

• they would perform their dances more often

The word they in the last line of paragraph E refers to ______.

• soft red feathers

• female Carola’s parotia birds

• male birds' wings

• female Goldie’s birds

Which of the following questions CANNOT be answered by the information in the passage?

• What has replaced much of the forests where the birds of paradise lived?

• Why is the environment of New Guinea perfect for the birds of paradise?

• Why were the birds of paradise hunted in the early 1900s?

• What do the females of the birds of paradise look like?