Ectotherms

What is the largest group of vertebrates?

• amphibians

• fish

• reptiles

• mammals

What type of fish have structures that allow them to feed by scraping, stabbing, and sucking their food?

• bony fishes

• cartilaginous fishes

• jawless fishes

Which of the choices is an example of a bony fish?

• lamprey

• shark

• ray

• trout

True or False: Cartilaginous fishes are herbivores.

• True

• False

True or False: Fishes have a closed, one-loop circulatory system.

• True

• False

Vertebrates are members of the ______ phylum.

• Chrodata

• Echinoderm

• Annelida

• Porifera

Which animal is an ectotherm?

• squirrel

• parrot

• turtle

• human

A fish obtains oxygen through its_______.

• skin

• lungs

• lungs and skin

• gills

______ are vertebrates that begin their lives breathing with gills and develop lungs as adults.

• fishes

• reptiles

• amphibians

• snakes

Adult amphibians obtain their oxygen through ______.

• gills

• lungs

• skin

• lungs and skin