Oceanic Zone Quiz

1. Where might you find the organism in the picture below?

At surface of oceanic zone

In coral reefs

In the deeper levels of the oceanic zone

You would not find this organism in the oceanic zone.

2. What do the organisms that live near the surface of the oceanic zone feed on?

Zooplankton

Phytoplankton

Detritus

Bread from humans

3. What purpose does phytoplankton serve?

They eat the zooplankton

They convert carbon dioxide into organic carbon.

They are the top of the food chain.

They have no purpose in the oceanic zone.

4. Why isn't the oceanic zone as productive as the neritic zone?

It is too big.

It does not contain as many organisms.

Sunlight does not penetrate it very deeply.

Nonsense! The oceanic zone is more productive than the neritic zone.

5. The oceanic zone is a _______________ division of the ocean.

Horizontal

Vertical

New

Small

6. What do the deep sea creatures use as their main food source?

Zooplankton

Phytoplankton

Detritus

Bread from humans

7. What is the distance range for the oceanic zone?

From the high tidemark to the low tidemark

From the low tidemark to the open ocean

From the low tidemark to the continental shelf

From the continental shelf to the open ocean

8. The oceanic zone is

Mostly aphotic.

Mostly photic.

Mostly benthic.

Mostly photic or aphotic, depending on the distance from the shore.

9. Complete the following analogy:

Sunlight:Oceanic Zone as _:__

Rain:Desert

Sunlight:Desert

Temperature:Climate

Saltiness:Estuary

10. What percentage of the surface area of the world's oceans is contained within the oceanic zone?

20%

40%

70%

90%