Vertebrates

Phylum Chordata includes which of the following? (Select all that apply)

• Lamprey

• Dragonfly

• Monkey

• Eagle

• Sea sponge

Lampreys and sharks are both fish, but what evolutionary advancement makes sharks more complex than lampreys?

• Jaws
• Gills
• Tails
• Fins

Which of the following circulatory systems does a trout have?

• Single-loop, 2 chambers
• Double loop, 3 chambered heart
• Double loop, 4 chambered heart

Fish obtain oxygen from the water using

• Gills
• Fins
• Lungs
• Diffusion

Which of the following is an evolutionary advancement of AMPHIBIANS have over FISH

• Lungs

• Shelled eggs

• Feathers

• Warm-blooded

Which term best describes how fish and amphibians maintain their body temperature?

• Ectothermic
• Endothermic
• Warm blooded
• Dioecious

What term means "double life" and describes how organisms in this vertebrate class spend their juvenile (larval) stage living in water, and their adult stage living on land?

• Amphibia
• Reptilia
• Vertebrata
• Mammalia

Which of the following circulatory systems does a bullfrog have?

• Single-loop, 2 chambers
• Double loop, 3 chambered heart
• Double loop, 4 chambered heart

The eggs of amphibians can dry out easily because they

• Do not have watertight shells
• Are never encased in jelly
• Are usually laid on land
• Are always fertilized externally

All of the following are advancements of the reptiles over the amphibians EXCEPT

• Being endothermic
• Claws
• Watertight egg shells
• Tough scaly skin