Grade 6 Chapter 13.3

1.

1 point

These live on or in the ocean floor

plankton

nekton

benthos

mentos

2.

1 point

free swimming in the open ocean

menthos

nekton

plankton

benthos

3.

1 point

drift freely near the ocean surface

benthos

menthos

nekton

plankton

4.

1 point

What is the benthic environment?

the plankton zone

the region near the ocean floor

the region and all the organisms near the ocean floor

the intertidal zone between low and high tides

5.

1 point

What is special about marine life in the intertidal zone?

Marine life always burrow into the sand for protection.

Marine life grows very quickly.

Marine life always float freely near the water's surface.

Marine life must be able to live underwater and on dry land.

6.

1 point

How is the sublittoral zone more stable than the intertidal zone?

The sublittoral zone's temperature, water pressure, and sunlight remain fairly constant.

The sublittoral zone's organisms live with many changes.

The sublittoral zone ends at the edge of the continental shelf.

The sublittoral zone's organisms are not covered with water.

7.

1 point

Why are plants scarce in the bathyal zone?

There is too much sunlight.

It is too cold.

There is a lack of sunlight.

It is too hot.

8.

1 point

Why do scientists know so little about the abyssal zone?

It is covered by ice.

It is too deep and dark.

It is not worth exploring.

There are too many animals living there.

9.

1 point

Which is the deepest benthic zone?

the abyssal zone

the bathyal zone

the hadal zone

the sublittoral zone

10.

1 point

What is the zone near the surface and at the middle depths of the ocean?

the middle environment

the benthic environment

the pelagic environment

the surface environment

11.

1 point

Which statement describes the neritic zone?

It is cool and deep.

It is warm and deep.

It is warm and shallow.

It is cool and shallow.

12.

1 point

What does the neritic zone contain the largest concentration of?

sponges

marine life

giant squids

tube worms.

13.

1 point

What does water in the oceanic zone cover?

the entire sea floor except for the continental shelf

the entire sea floor, including the continental shelf

the neritic zone and the continental shelf

the continental shelf and all shorelines