Review- Science

What are TWO groups animals have been divided into?

• vertebrates and mammals

• invertebrates and vertebrates

• invertebrates and arthropods

What percentage of animals on Earth are invertebrates?

• 96%

• 99%

• 97%

The largest group of invertebrates are ______

• insects

• arthropods

• mammals

What is one trait of a mollusk?

• They have an exoskeleton.

• They have soft bodies.

• They have eight legs.

Which is NOT a function of a mollusk's muscular foot?

• crawling

• digging

• breathing

What correctly explains the purpose of the mantle?

• It allows the mollusk to feed.

• It protects the soft body of the mollusk.

• It helps the mollusk move.

What do stinging cells contain?

• poisonous nails

• poisonous threads

• poisonous bubbles

What is the mouth of the hollow sac surrounded by?

• tentacles

• arms

• needles