Science Unit 2 Lessons 1 and 2

Are you ready?

• YES!

• No.

What thing do scientists use to make animal groups?

• the color

• the size

• the structures

Cats have fur, breath using lungs, and make milk for their offspring.

Cats belong to which group?

• reptile

• mammal

• fish

• bird

Young frogs live in the water and breath with gills. They grow legs and breath with lungs as an adult. Which group do frogs belong to?

• bird

• mammal

• amphibian

• reptile

A shark has fins and a tail. Sharks breath using gills. Sharks live in water. Sharks belong to which animal group?

• fish

• mammal

• amphibian

• reptile

Humans are animals.

• True.

• False.

Reptiles have scales and breath using lungs.

• True.

• False.

Birds have fins and breath using gills.

• True.

• False.

Which structure do birds NOT have?

• beak

• scales

• wings

A turtle can use its shell for

• protection.

• getting food.