Lesson 3 Invertebrates

Scientists have named more than a ________ species of invertebrates.

• hundred
• thousand
• billion
• million

What is an animal without a backbone called?

• vertebrate
• invertebrate
• mammal
• snake

Most animals on earth are Invertebrates.

• TRUE
• FALSE

________ are the largest invertebrates.

• Giant squids
• Blue whales
• Flies
• Penguins

A ______________ has a soft body without bones.

• vertebrate
• mammal
• mollusk
• bird

Some mollusks get oxygen by using ___________.

• gills
• lungs
• book lungs
• nose

Which worms can live in water or on land?

• earthworms
• flatworms
• roundworms
• parasites

Worms can be microscopic.

• TRUE
• FALSE

What phylum does the jellyfish belong to?

• annelids
• arthropods
• mollusks
• cnidarians

What is NOT an example of an arthropod?

• insect
• clam
• lobster
• spider