Science grade 6:Chap1:l3: Animals

Vertebrates and Invertebrates are classified by ..................

• habitats

• backbones

• cartilages

.................. are animals with backbones

• invertebrates

• chordates

• vertebrates

.................. are animals without backbones

• invertebrates

• chordates

• vertebrates

..................... are animals with nerve cords running down their backs

• vertebrates

• invertebrates

• chordates

................... is an inner skeleton used for protection and movement

• endoskeleton

• exoskeleton

• cartilage

There are seven classes of vertebrates including mammals, reptiles, birds, jawless fish, bony fish, and cartilaginous fish.

Which class out of the seven classes of vertebrates is missing?

• reptiles

• bony fish

• amphibians

Endoskeleton is made up of .............. and ..................

• cartilage/ jaw

• organs/ cartilage

• cartilage/ bone

which class of vertebrates that have fur or hair, and feed their young with milk?

• amphibians

• mammals

• reptiles

which class of vertebrates that breathe through gills in water when young and through lungs as adults?

• reptiles

• fish

• amphibians

Which class of vertebrates that breathe through lungs, have scales, jaws, and bony skeletons?

• mammals

• jawless fish

• reptiles