Skeletons Inside and Out

Reptiles and amphibians have _______________ like mammals. (page 17)

• Endoskeletons

• Exoskeletons

Tags

CCSS.L.4.6

CCSS.RI.4.4

What makes crocodiles quick on land? (page 17)

• Strong jawbones and teeth

• Short, sturdy leg bones

• Vertebrae in their tails

Tags

CCSS.RI.4.1

CCSS.RI.4.3

What do frogs NOT have? This allows them to land on their chests without breaking any bones. (page 19)

• Strong, springy back legs

• An endoskeleton

• Ribs

Tags

CCSS.RI.4.1

How does the salamander escape attacks? (page 19)

• It can detach its tail

• It can camouflage with the environment

• It can run quickly

Tags

CCSS.RI.4.1

CCSS.RI.4.3

What is cartilage? (page 21)

• Bone

• A strong, flexible tissue

• Muscles

Tags

CCSS.L.4.6

CCSS.RI.4.3

CCSS.RI.4.4

How does a starfish move? (page 22)

• It's covered with stiff sprines

• It has ball and socket joints

• It has tiny tube feet under its arms

Tags

CCSS.RI.4.1

CCSS.RI.4.3

As crustaceans grow, what do they do to their exoskeletons? (page 23)

• Molt or shed

• The exoskeleton grows with them

Tags

CCSS.RI.4.1

What type of ocean animal doesn't have a skeleton? (page 24)

• Lobsters

• Starfish

• Jellyfish

What is the second step in the growth of a damselfly? (page 28)

• The nymph grows and the skin splits

• The nymph rests on a stem

• The adult damselfly is fully developed

Tags

CCSS.RI.4.1

CCSS.RI.4.3

What is a sternum? (page 31)

• A strong flexible tissue

• Any of the places where two bones come together

• The bony framework of the head that protects the brain

• A long bone in the chest that connects to the ribs and bones in the shoulders, also called a breastbone

Tags

CCSS.L.4.6

CCSS.RI.4.4