What is an animal with a backbone and an internal skeleton?

• vertebrate
• invertebrate
• endothermic
• ectothermic

What is an animal without a backbone and an internal skeleton?

• vertebrate
• invertebrate
• ectothermic
• endothermic

Fish, amphibians, reptiles, birds, and mammals are all types of

• vertebrates
• invertebrates
• ectothermic animals
• endothermic animals

Organs that obtain information from the environment are called

• ectothermic organs
• sensory organs
• digestive organs
• respiratory organs

What is another word for warm-blooded that means that an animal's body temperature stays the same no matter what the temperature of its environment?

• endothermic
• ectothermic
• invertebrate
• echinoderm

What is another word for cold-blooded that means the animal's body temperature is the same as its environment?

• endothermic
• ectothermic
• echinoderms
• invertebrates

What are ectothermic vertebrates with lungs, covered in scales or plates?

• fish
• amphibians
• reptiles
• birds

What are ectothermic vertebrates that breathe with gills when young, but go through metamorphosis and breathe with lungs as adults?

• reptiles
• fish
• amphibians
• birds

What are endothermic vertebrates with wings and feathers who lay eggs?

• birds
• mammals
• reptiles
• amphibians

What are endothermic vertebrates with fur and which produce milk to feed their young?

• birds
• mammals
• fish
• reptiles