The trochophore is a larval stage of most mollusks.

• True

• False

Earthworms exchange carbon dioxide through the walls of a complex respiratory tube system.

• True

• False

Leeches are parasitic segmented worms.

• True

• False

Squids move oxygen and nutrients through a closed circulatory system.

• True

• False

Mollusks have bilateral symmetry.

• True

• False

Mollusks are pseudocoelomates.

• True

• False

Which structure secretes the coating the produces the pearl in an oyster?

• shell

• mantle

• foot

• nepheridium

In the diagram above, what part is analogous (similar to) the central nervous system in humans?

• A

• B

• C

• D

Tags

NGSS.MS-LS1-3

In the diagram above, what part is analogous (similar to) the stomach in humans?

• A

• B

• C

• D

Tags

NGSS.MS-LS1-3

In the diagram above, what part is analogous (similar to) the kidneys in humans?

• A

• B

• C

• D