The presence of a cloaca is characteristic of:
Show answer and explanation
Correct answer: Birds and reptiles
Birds and reptiles have a cloaca where digestive, excretory, and reproductive tracts open. Most mammals lack a cloaca.
Keep practicing
More Comparative Organ System Anatomy questions
- Which vertebrates possess pneumatic bones as a skeletal adaptation?
- The lateral line system is a sensory adaptation found in:
- Which organ is absent in fishes but present in tetrapods?
- The diaphragm is a respiratory adaptation unique to:
- Which vertebrates have nucleated red blood cells?
- The crop is a digestive adaptation mainly found in: