Marine Life Review

In a marine food chain, what role does a fish, such as an ocean sunfish, play in the ecosystem? (select all that apply)

• primary consumer

• secondary consumer

• prey

• producer

What is the name of the zone that lies just below the photic zone (sunlit zone)?

• coral zone

• twilight zone

• midnight zone

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

• they will sting you

• they can swim fast

• they are rarely eaten by other sea animals

• they need sunlight to survive

Which of the following MOST accurately describes the midnight zone?

• it receives absolutely no sunlight

• it is located 100 meters below the ocean's surface

• it is filled with very small organisms called phytoplankton

What is one way that fish interact with a coral reef?

• fish help build larger coral reefs

• fish hide within the coral reef for protection

• they build nests in the coral

• they avoid coral reefs

Which human activity damages a coral reef

• recycling

• conservation

• creating pollution

• controlling waste

True or False: as you get deeper in the ocean, the light increases.

• True

• False

About 98% of all marine life lives in which ocean zone?

• Photic (sunlit) Zone

• Twilight Zone

• Midnight Zone

How have animals that live in the midnight zone adapted to survive?

• they are blind, have large eyes, or are bioluminescent

• they have legs

• they don't eat any food

• they swim to the other zones

Which statement is TRUE about coral reefs?

• coral reefs contain a great diversity of life and species and are also called "the rainforest of the sea"

• coral reefs contain very few species

• coral reefs are generally less than 10 years old

• coral reefs cover most of the world's ocean floor