Animal Classification

Which type of animals have a backbone?

• Invertebrates

• Vertebrates

• Amphibians

• Reptiles

What is the body plan of animals with radial symmetry?

• Arranged around a central point

• Can be divided into mirror images

• Have a backbone

• Have a two-way digestive system

Which phylum do sponges belong to?

• Porifera

• Cnidarians

• Mollusks

• Echinoderms

What is the body plan of cnidarians?

• Asymmetrical

• Bilateral symmetry

• Radial symmetry

• Segmented

How do cnidarians capture other animals?

• Using their tentacles

• By sucking in their food

• By stinging with their cells

• By living inside the bodies of other animals

Which type of worms have a flat body?

• Roundworms

• Segmented worms

• Flatworms

• Jellyfish

What is the main characteristic of mollusks?

• Muscular foot

• Radial symmetry

• Exoskeleton

• Hollow bones

What type of skeleton do echinoderms have?

• Endoskeleton

• Exoskeleton

• Cartilage skeleton

• No skeleton

Which group of invertebrates has the largest number of species?

• Cnidarians

• Mollusks

• Arthropods

• Worms

What is the main characteristic of mammals?

• Lay eggs

• Have feathers

• Feed their babies milk

• Have a two-way digestive system