Final answer:
The cloaca serves as a reproductive organ in non-mammals, while also playing a role in the excretory and digestive systems. It is responsible for the elimination of waste products and the transfer of sperm during mating.
Step-by-step explanation:
The cloaca is a common body opening that serves as a reproductive organ in non-mammals, such as birds. However, it also serves other functions besides reproduction. The cloaca is also involved in the excretory and digestive systems. Waste products from the digestive system and urinary system are expelled through the cloaca.
For example, in birds, the cloaca is responsible for the elimination of solid waste, urine, and the transfer of sperm during mating. The cloaca acts as a single exit and entrance for sperm, eggs, and waste products in reptiles as well.
Overall, the cloaca is a multipurpose organ that plays a role in reproduction, digestion, and waste elimination in non-mammals.