Final answer:
The orders of class Mammalia in the group Placentals that we learned include Primates, Carnivora, Artiodactyla, Perissodactyla, Rodentia, and Chiroptera.
Step-by-step explanation:
Within the class Mammalia, the Placental mammals constitute the largest group, and they are classified into various orders based on shared characteristics. The orders we learned encompass a diverse range of mammals. Primates include humans and other primates, while Carnivora consists of carnivorous mammals like lions and bears.
Artiodactyla and Perissodactyla comprise even-toed and odd-toed ungulates, such as deer and horses, respectively. Rodentia represents rodents like mice and squirrels, and Chiroptera includes bats. Understanding these orders is fundamental in zoology for categorizing and studying the diverse members of the Placental mammal group. Each order represents a distinct evolutionary path, showcasing the remarkable diversity within this class.