SmithLifeScience                                             Name __________________ Period _____

Reading Study Guide Chapter 12 Birds and Mammals 12-3 Mammals (pp.420-428)

(p.420)

List 4 ways people of Tibet have depended on the yak.
1. _____________________________________________
2. _____________________________________________
3. _____________________________________________
4. _____________________________________________

5. There are about _____________ different species of mammals.

Characteristics of Mammals (p.420-423)

(p.421)

6-14.  Circle the correct characteristics of mammals.

        Ectothermic         Feathers         Scales         Vertebrate         3-chambered heart

        Teeth                 4-chambered heart            Hair/Fur            Most born alive

15. Every mammal is fed ____________ from its mother's body.

Obtaining Food

Match the type of tooth to its function (job).

        16. Canines _____                                   a. Grind and shred food.

        17. Incisors _____                                  b. Stab and tear food

        18. Molars and Pre Molars _____           c. Bite off and cut food

Identify the mammal skulls below as a Carnivore or a Herbivore.

    19. __________________                 20. __________________

(p.422)

Obtaining Oxygen

21. Like reptiles and birds, all mammals breathe with ____________.

22. Mammals breathe in and out using rib muscles and a large muscle called the ______________.

Keeping Conditions Stable

23. Animals that live in cold climates have fur and a layer of ____________ to keep warm.

(p.423)

Movement

Match the mammal with their type of movement

        24. Whales ____                         a. Have wings for flying

        25. Kangaroos _____                   b. Swing by their arms in trees

        26. Bats _____                           c. Hop

        27. Orangutans _____                 d. Have flippers for swimming

Nervous System

Match the mammal species to its adaptation.

28. Bats _____                             a. Use keen hearing to navigate and catch prey in dark

29. Tarsiers _____                       b. Can smell predators in time to flee

30. Antelope _____                      c. Have huge eyes to see in the dark

31. Seals _____                            d. Uses long whiskers to detect movement of prey

32. Dogs and Cats _____               e. Use keen sense of smell to track their prey

Diversity of Mammals (p. 424-427)

33. There are  ______ main groups of mammals.

Monotremes

Name two mammals that lay eggs.   34. _________________        35. _________________

Marsupials

36. Marsupials babies finish their development in a ____________ on their mother's body.

37. The length of time between fertilization and birth is called the ______________ period.

38. Name a marsupial. _______________

Placental Mammals

39. What is a placenta? __________________________________________________
___________________________________________________________________

40. The gestation period of an elephant is about   ____________.

41. The gestation period of a mouse is about _____________.

Diversity of Placental Mammals (p.426-427)

Identify the placental mammal group that each animal belongs to.

42. ______________                 43. ______________                 44. ______________

45. ______________             46. ______________                     47. ______________

48. ______________             49. ______________                     50. ______________