Vertebrates Unveiled: Characteristics and Classes of Animal Life

The video explores vertebrates, a group of animals with a backbone, skull, endoskeleton, bilateral symmetry, and two pairs of appendages. Vertebrates are classified into seven classes: mammals, birds, reptiles, amphibians, bony fish, cartilaginous fish, and jawless fish. Each class has unique characteristics, such as endothermy in mammals and birds, and ectothermy in reptiles and amphibians. The video concludes with a review of these key points.

Approximately what percentage of all animal species are vertebrates?

• 75%

• 50%

• 25%

• 5%

Which of the following is NOT a characteristic of vertebrates?

• Backbone

• Skull

• Exoskeleton

• Bilateral symmetry

What is the larger group to which all vertebrates belong?

• Reptilia

• Chordata

• Vertebrata

• Mammalia

Which class of vertebrates can regulate their body temperature internally?

• Fish

• Amphibians

• Mammals

• Reptiles

What unique feature do birds have that distinguishes them from other vertebrates?

• Fur

• Gills

• Feathers

• Scales

Which of the following is an example of a reptile?

• Seahorse

• Crocodile

• Frog

• Platypus

Amphibians undergo a transformation from aquatic larval forms to what?

• Amphibious adults

• Aerial adults

• Terrestrial adults

• Marine adults

Which class of fish has a skeleton made of bone?

• Amphibians

• Bony fish

• Jawless fish

• Cartilaginous fish

Which of the following is an example of a cartilaginous fish?

• Seahorse

• Frog

• Shark

• Lamprey

What is the largest class of vertebrates?

• Mammals

• Birds

• Bony fish

• Reptiles