Respiration. Jawless Fishes Gills - pore-like openings 7 pairs of gill pouches in lamprey 5-15 pairs of gill pouches in hagfish, but varying numbers.
Chapter 3 Section 2. Fish Largest group of vertebrates Largest group of vertebrates Fish: Fish: Ectothermic vertebrate Ectothermic vertebrate Lives in.
Respiration AP Biology Unit 6 Types of Respiratory Systems Animals typically do gas exchange through one (or more) of the following means: –Skin (body.
Fishes Chapter 11 Section 2. Characteristics of Fishes Vertebrate Lives in the water Uses fins to move Ectotherms Obtain oxygen through gills.
