Question

1. which type of animal has the most efficient respiratory system? amphibians birds mammals reptiles 15. the name for breeding in fish is ____. molting parthenogenesis spawning budding 16. reptiles are ____. endotherms ectotherms placenta amniotic

Explanation:

1. Birds have a highly - efficient respiratory system with a unique system of air sacs that allows for unidirectional airflow, enabling more efficient gas exchange compared to other groups.
2. Spawning is the term used for the breeding process in fish, where they release eggs and sperm into the water for fertilization.
3. Reptiles are ectotherms, meaning they rely on external sources of heat to regulate their body temperature. The selected answer "endotherms" is incorrect. Endotherms generate their own body heat internally.

Answer:

1. B. birds
2. C. spawning
3. B. ectotherms