Mammals

Which of these dental features is present only in some herbivores?

• open-rooted teeth
• carnassial teeth
• deciduous teeth
• sharp canine teeth

Bats, dolphins, horses, humans and dogs are all examples of which group of mammals?

• monotremes
• marsupials
• placentals

Which of the following is a characteristic that all mammals share?

• they all have a pouch
• they all have a cloaca
• they all have hair
• they all have a short gestational period

Which of the following is believed to be the ancestral group from which mammals descended?

• Anapsids
• Synapsids
• Diapsids
• Euryapsids

This mammal is a member of order

• Cetacea
• Chiroptera
• Sirenia
• Edentata

This mammal is a member of order

• Chiroptera
• Insectivora
• Carnivora
• Rodentia

Kangaroos, koalas, and opossums are 

• Monotremes
• Placentals (eutherians)
• Marsupials
• All of these

The duck-billed platypus and echidna

• Monotremes
• Placentals (eutherians)
• Marsupials
• All of these

The type of mammal where offspring are born fully developed

• Monotremes
• Placentals (eutherians)
• Marsupials
• All of these

What is the only marsupial native to North America?

• Opossum
• Kangaroo
• Echidna
• Bats