The upcoming discussion will update you about the difference among the three groups of mammals. Difference # Prototheria: 1. Prototheria is oviparous. 2. Pinna is absent in prototheria.z 3. Prototheria has no nipples (mammae). 4. No marsupial pouch is present in prototheria. 5. in Prototheria, digestive and urinogenital tracts open into a cloaca. Cloaca opens […]
Difference Among the Three Groups of Mammals | Animal Kingdom
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