1. : Which subclass of mammals includes monotremes?
(A) Prototheria
(B) Theria
(C) Eutheria
(D) Metatheria
2. : What characteristic defines marsupials?
(A) They give birth to underdeveloped young that continue to develop in a pouch
(B) They lay eggs
(C) They have a placenta
(D) They have specialized teeth for different diets
3. : Which of the following is a key characteristic of placental mammals?
(A) They have a placenta that provides nutrients to the developing fetus
(B) They have a pouch for carrying young
(C) They lay eggs
(D) They lack hair or fur
4. : In which era did the first mammals appear?
(A) Mesozoic
(B) Paleozoic
(C) Cenozoic
(D) Precambrian
5. : Which group of mammals includes whales and dolphins?
(A) Cetartiodactyla
(B) Carnivora
(C) Primates
(D) Chiroptera
6. : Which order of mammals is known for their specialized teeth and includes animals like lions and bears?
(A) Carnivora
(B) Rodentia
(C) Chiroptera
(D) Perissodactyla
7. : What is a distinguishing feature of the order Rodentia?
(A) Continuously growing incisors
(B) Presence of a pouch
(C) Egg-laying
(D) Placental development
8. : Which order of mammals includes bats?
(A) Chiroptera
(B) Insectivora
(C) Lagomorpha
(D) Proboscidea
9. : Which group of mammals is characterized by a trunk-like appendage?
(A) Proboscidea
(B) Sirenia
(C) Perissodactyla
(D) Artiodactyla
10. : The evolution of which group marks the transition from early mammal-like reptiles to true mammals?
(A) Synapsids
(B) Diapsids
(C) Therapsids
(D) Lepidosaurs
11. : Which subclass of mammals includes the placental mammals?
(A) Eutheria
(B) Prototheria
(C) Metatheria
(D) Monotremata
12. : Which mammal is considered a living fossil due to its ancient lineage?
(A) Platypus
(B) Elephant
(C) Lion
(D) Bat
13. : What type of reproduction is most common among mammals?
(A) Viviparous
(B) Oviparous
(C) Ovoviviparous
(D) Parthenogenesis
14. : Which class of mammals includes animals with a highly developed brain and opposable thumbs?
(A) Primates
(B) Carnivores
(C) Rodents
(D) Ungulates
15. : Which family within the order Carnivora includes domestic cats?
(A) Felidae
(B) Canidae
(C) Ursidae
(D) Mustelidae
16. : What adaptation is common among mammals of the order Perissodactyla?
(A) Hooves with an odd number of toes
(B) Sharp claws and carnivorous diet
(C) Large ears for echolocation
(D) Webbed feet for swimming
17. : Which order includes mammals known for their ability to glide through the air?
(A) Dermoptera
(B) Chiroptera
(C) Insectivora
(D) Lagomorpha
18. : Which group of mammals is known for their aquatic adaptations, including a streamlined body and flippers?
(A) Sirenia
(B) Proboscidea
(C) Rodentia
(D) Carnivora
19. : What is a key feature of the order Lagomorpha?
(A) Presence of continuously growing incisors
(B) Ability to fly
(C) Aquatic adaptations
(D) Presence of a prehensile tail
20. : Which mammalian group is characterized by the presence of a ruminating stomach?
(A) Artiodactyla
(B) Perissodactyla
(C) Carnivora
(D) Proboscidea
21. : What is the primary characteristic of mammals in the order Proboscidea?
(A) Presence of a trunk
(B) Large ears
(C) Ability to fly
(D) Aquatic lifestyle
22. : Which mammalian order includes animals such as armadillos and anteaters?
(A) Xenarthra
(B) Chiroptera
(C) Insectivora
(D) Lagomorpha
23. : Which subclass of mammals includes the marsupials?
(A) Metatheria
(B) Eutheria
(C) Prototheria
(D) Therapsida
24. : Which mammalian order includes whales and dolphins?
(A) Cetartiodactyla
(B) Carnivora
(C) Rodentia
(D) Chiroptera
25. : What feature is unique to the order Chiroptera?
(A) Wings adapted for flight
(B) Trunk-like appendages
(C) Aquatic adaptations
(D) Large claws for digging
26. : Which group of mammals includes the elephants?
(A) Proboscidea
(B) Sirenia
(C) Carnivora
(D) Perissodactyla
27. : Which mammalian order is characterized by animals that have adapted to a variety of environments, including deserts and forests?
(A) Rodentia
(B) Carnivora
(C) Chiroptera
(D) Lagomorpha
28. : Which order includes the only mammalian species capable of true flight?
(A) Chiroptera
(B) Dermoptera
(C) Insectivora
(D) Primates
29. : What adaptation is typical of mammals in the order Sirenia?
(A) Aquatic lifestyle with flippers
(B) Large, sharp claws
(C) Ability to glide
(D) Presence of a trunk
30. : Which mammalian order includes animals such as the armadillo and the sloth?
(A) Xenarthra
(B) Proboscidea
(C) Carnivora
(D) Chiroptera