Chapter 4

What do sea jellies, earthworms, and spiders have in common?

• they all have eight legs

• they all have stingers

• they all have backbones

• they do not have backbones

Which is an example of an inherited trait?

• pierced ears

• dyed hair

• green eyes

• broken arm

Which animal group has mostly live births?

• amphibians

• mammal

• reptiles

• arthropods

What is a vertebrate?

• an animal that has a backbone

• an animal that does not have a backbone

• an animal that has live births

• an animal that has smooth, wet skin

Which stage comes second in the life of a butterfly?

• adult

• egg

• pupa

• larva

How would you classify this animal?

• amphibian

• arthropod

• worm

• mollusk

Matt falls and cuts his leg. It leaves a scar. Which best describes the scar?

• inherited behavior

• acquired characteristic

• inherited trait

• learned behavior

Which animal group includes cold-blooded vertebrates that have dry, scaly skin?

• mammals

• amphibians

• reptiles

• mollusks