Vertebrates and Invertebrates

Most animals on Earth can be classified as

• vertebrates

• invertebrates

• bacteria

• mammals

Which animal would be the most complex?

• echinoderm

• earthworm

• sponge

• butterfly (arthropod)

How do most mollusk move?

• Using tube feet

• Using a muscular foot

• fins for swimming

• they do not move

How do sponges obtain food?

• filter it from the water

• grab it with sharp teeth

• pry it apart with their tube feet

• pull it into their mouth using jointed appendages

Which group of animals are all ectothermic?

• snake, elephant, sea star

• amphibian, reptile, fish

• bird, mammal, reptile

• horse, cat, human

Which group of animals are all invertebrates?

• reptiles, sponges, annelids, echinoderms, arthropods

• fish, amphibians, reptiles, birds, mammals

• mollusks, sponges, annelids, arthropods, echinoderms

• mollusks, mammals, annelids

All animals are classified into two main groups based on physical and internal characteristics. These two groups are:

• ectothermic and endothermic

• mammals and reptiles

• vertebrates and invertebrates

• birds and mollusks

Snakes, lizards, alligators, and crocodiles are examples of:

• slithery animals

• amphibians

• reptiles

• fish

Animals differ from plants because

• animals are multicellular and plants are unicellular

• animals have chlorophyll and more complex cells

• animals are living and plants are not

• animals are heterotrophs and plants are autotrophs

Kingdom Animalia can be divided into ____ phyla.

• 35

• 2

• 156

• 8