Underwater world & Bioluminescence Review

How is it possible for one species to live in all the world's oceans?

• All marine species evolved on land before they began living in the oceans

• The same species evolved independently in different oceans

• All the world's oceans are connected

• All marine species evolved before the oceans split apart

Why do some aquatic organisms produce a glow called Bioluminescence? (Check all that apply.)

• To attract a mate

• To signal other members of its species that it is sick

• To scare away predators

• To attract prey

In terms of area, how do the world's oceans compare to the world's land masses?

• The land masses cover a much bigger area than the oceans

• The oceans cover a much bigger area than the land masses

• Land masses and oceans both cover about 50 percent of the earth's surface

• The land masses cover a slightly larger area than the oceans

Which word best describes the variety of ocean habitats?

• Homogeneous

• Similar

• Uniform

• Diverse

What can you infer about plankton from the fact that they live close to the surface of the ocean?

• They are able to swim extremely fast

• They are rarely eaten by other forms of marine life

• They need sunlight to survive

• They will sting you if you decide to go swimming in the ocean

Which of the following is a true statement about the abyssal zone?

• It gets absolutely no sunlight

• Life cannot exist there

• It is filled with microscopic organisms called plankton

• It is located 100 meters below the surface of the ocean

What do rain forests have in common with coral reefs?

• They are both dangerous for humans to explore

• They both support many different species

• They both exist only around the Equator

• They do not need much sunlight to thrive

What might happen if an anglerfish didn't have a lighted rod on its head?

• It wouldn't be able to steer through the water

• It wouldn't be able to avoid predators

• It wouldn't be able to see

• It wouldn't be able to attract prey

Which term best describes the gases emitted by undersea vents?

• Cold

• Poisonous

• Hot

• Oxygen-rich

Which organisms serve as the base of the marine food chain?

• Plankton

• Minnows

• Tuna

• Eels