Animal Structures Review

How to scientists classify living things into groups?

• by the ways they look alike

• by size and age

• by their names

If something needs food, water, and air to survive, and it also grows and reproduces, it is:

• once-living

• living

• nonliving

What kind of animal has feathers?

• Fish

• Reptiles

• Birds

Which kind of animal has gills to breathe?

• fish

• birds

• mammals

• reptiles

Which animal is NOT a mammal?

• cat

• crayfish

• dog

• cow

Which structural adaptation would best help a giraffe reach its food more easily?

• big ears

• sharp teeth

• long neck

• darker spots

How might an animal respond to a sudden bright light?

• running away

• blinking eyes

• increased heartbeat

Why are duck's feathers oily?

• It keeps them neat and in place

• it keeps them from freezing in the winter

• it keeps feathers from getting soaked to help ducks float

• it keeps bugs away from it

How do sharp teeth help a lion?

• helps them tear apart food

• helps them run away from predators

• helps them swim

How do claws (talons) help an eagle?

• helps them fly

• help them grab food, for protection, and build nests

• helps them swim