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Click on a lesson name to select. Chapter 30 Mammals Section 1: Mammalian Characteristics Section 2: Diversity of Mammals.

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Presentation on theme: "Click on a lesson name to select. Chapter 30 Mammals Section 1: Mammalian Characteristics Section 2: Diversity of Mammals."— Presentation transcript:

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3 Click on a lesson name to select. Chapter 30 Mammals Section 1: Mammalian Characteristics Section 2: Diversity of Mammals

4 Hair and Mammary Glands  Two characteristics that distinguish members of class Mammalia from other vertebrate animals are hair and mammary glands Mammalian Characteristics Mammals Chapter 30

5 Functions of Hair 1. Insulation Mammals 2. Camouflage 3. Sensory devices 4. Waterproofing 5. Signaling 6. Defense 30.1 Mammalian Characteristics Chapter 30

6 Other Characteristics  Endothermy Mammals  Source of body heat is internal.  Heat is produced by a high metabolic rate.  Body temperature is regulated by internal feedback mechanisms Mammalian Characteristics Chapter 30

7 Feeding and Digestion  Daily intake of food is used to generate heat to maintain a constant body temperature. Mammals 30.1 Mammalian Characteristics Chapter 30

8 Mammals 30.1 Mammalian Characteristics Chapter 30 Visualizing the Digestive Systems of Mammals

9 Trophic Categories 1. Insectivores Mammals 2. Herbivores 3. Carnivores 4. Omnivores 30.1 Mammalian Characteristics Chapter 30

10 Teeth  Reveal the life habits of a mammal Mammals  Carnivores use canines to stab and premolars to slice and shear meat.  Incisors of insectivores are long and curved, functioning as pincers in seizing insect prey Mammalian Characteristics Chapter 30

11 Excretion  Kidneys excrete or retain the proper amount of water in body fluids. Mammals  Enables mammals to live in extreme environments 30.1 Mammalian Characteristics Chapter 30 Mammals

12 Respiration  High levels of oxygen are required to maintain a high level of metabolism. Mammals  Mammals are the only animals that have a diaphragm Mammalian Characteristics Chapter 30

13 Circulation  Mammals require a consistent supply of nutrients and oxygen to maintain homeostasis. Mammals  Keeping oxygenated and deoxygenated blood separate makes the delivery of nutrients and oxygen more efficient Mammalian Characteristics Chapter 30

14 The Brain and Senses  Mammals have highly developed brains. Mammals  Cerebral cortex is responsible for coordinating conscious activities, memory, and the ability to learn.  Cerebellum is responsible for balance and coordinating movement Mammalian Characteristics Chapter 30

15 Complex Behavior Senses Mammals  The importance of the senses varies from one group of mammals to the next. Glands  A system of glands secretes a variety of fluids that helps to regulate a mammal’s internal environment Mammalian Characteristics Chapter 30

16 Reproduction  In mammals, the egg is fertilized internally. Mammals  Development of the embryo takes place in the female uterus. Movement  Mammals must find food, shelter, and escape from predators Mammalian Characteristics Chapter 30

17 Mammal Classification  Monotremes 30.2 Diversity of Mammals Mammals  Marsupials  Placental mammals Chapter 30

18 Mammals Monotremes  Reproduce by laying eggs  Duck-billed platypus  Echidna Echidna 30.2 Diversity of Mammals Chapter 30

19 Marsupials  Very short period of development in the uterus Mammals  Crawl into a pouch made of skin and hair and continue development while being nourished by milk from the mother’s mammary glands Kangaroo 30.2 Diversity of Mammals Chapter 30

20 Placental Mammals  Give birth to young that do not need further development within a pouch Mammals  Represented by 18 orders Shrew Humpback whale 30.2 Diversity of Mammals Chapter 30

21 Mammals 30.2 Diversity of Mammals Chapter 30

22 Evolution of Mammals Mammals 30.2 Diversity of Mammals Chapter 30

23 Therapsids  A therapsid is an extinct vertebrate with both mammalian and reptilian features. Mammals  Pair of holes in the roof of the skull that allowed for the attachment of jaw muscles  Limbs positioned beneath their bodies  Might have been endotherms 30.2 Diversity of Mammals Chapter 30

24 Mammals Chapter Resource Menu Chapter Diagnostic Questions Formative Test Questions Chapter Assessment Questions Standardized Test Practice biologygmh.com Glencoe Biology Transparencies Image Bank Vocabulary Animation Click on a hyperlink to view the corresponding lesson. Chapter 30

25 Name the term that refers to a mammal’s ability to produce heat internally. A. endoderm B. endothermy C. ectoderm D. ectothermy Mammals Chapter Diagnostic Questions Chapter 30

26 What classification of mammals reproduces by laying eggs? A. marsupial B. placental mammal C. monotreme D. therapsid Mammals Chapter Diagnostic Questions Chapter 30

27 A mammal’s period of gestation refers to what? A. amount of time the young stays with its herd B. amount of time the young stays in the uterus C. amount of time the young drinks its mother’s milk D. amount of time for the young to mature enough to reproduce Mammals Chapter Diagnostic Questions Chapter 30

28 Which characteristics distinguish mammals from other vertebrates? A. kidneys and a cloaca B. mammary glands and hair C. a high metabolic rate and limbs D. a four-chambered heart and endothermy Mammals 30.1 Formative Questions Chapter 30

29 What is the tough, fibrous protein that makes up hair, nails, claws, and hooves? A. urea B. keratin C. cellulose D. collagen Mammals 30.1 Formative Questions Chapter 30

30 What is the source of body heat for mammals? A. hibernation B. insulation C. metabolism D. respiration Mammals 30.1 Formative Questions Chapter 30

31 Which part of the brain is more highly developed in mammals than in other animals? A. cerebrum B. hypothalamus C. medulla D. optic lobe Mammals 30.1 Formative Questions Chapter 30

32 What is a group of cells that secretes fluid to be used elsewhere in the body? A. a bladder B. a duct C. a gland D. an organ Mammals 30.1 Formative Questions Chapter 30

33 Which mammals have reptilian features, such as laying eggs? A. cetaceans B. marsupials C. monotremes D. sirenians Mammals 30.2 Formative Questions Chapter 30

34 Which mammals use their two pairs of razor- sharp incisor teeth to gnaw through wood, seed pods, or shells to get food? A. artiodactyls B. insectivores C. lagomorphs D. rodents Mammals 30.2 Formative Questions Chapter 30

35 Which animals are cetaceans? Mammals A. deer and goats B. moles and shrews C. dolphins and whales D. manatees and dugongs 30.2 Formative Questions Chapter 30

36 Why did mammals undergo extraordinary adaptations to the environment after the disappearance of dinosaurs? Mammals A. They had new niches available to them. B. They were able to survive the ice age. C. They were no longer prey to dinosaurs. D. They no longer competed with dinosaurs Formative Questions Chapter 30

37 True or False The graph shows that large animals such as elephants have a high metabolic rate. Mammals Chapter Assessment Questions Chapter 30

38 Select the mammal that is a member of the order Chiroptera. A. hedgehog B. ape C. anteater D. bat Mammals Chapter Assessment Questions Chapter 30

39 Compare the digestive tracts of the deer and the fox. Infer why the deer’s digestive tract is so much longer. Answer: It takes longer and is more difficult to digest plant material than meat. Mammals Chapter Assessment Questions Chapter 30

40 Which animal eats the least amount of food as a percentage of its body mass? A. elephant B. shrew Mammals Standardized Test Practice Chapter 30

41 Why is a high metabolic rate necessary for the shrew’s survival? Mammals Standardized Test Practice Chapter 30

42 Mammals Standardized Test Practice A. Its body loses heat quickly. B. It has a short digestive tract. C. It carries out complex behavior. D. It produces milk for its offspring. Chapter 30

43 Mammals Standardized Test Practice Chapter 30 How does a herbivore’s digestive tract compare to the digestive tract of this carnivore?

44 Mammals Standardized Test Practice Chapter 30 An herbivore will have… A. a shorter digestive tract and a smaller cecum. B. a shorter digestive tract and a larger cecum. C. a longer digestive tract and a larger cecum. D. a longer digestive tract and a smaller cecum.

45 How do ruminants benefit from having bacteria in their stomachs? Mammals A. They can be omnivorous. B. They can digest meat. C. They can filter urea. D. They can process cellulose. Standardized Test Practice Chapter 30

46 Which teeth are more highly developed in a mountain lion? Mammals A. canines B. incisors C. molars D. premolars Standardized Test Practice Chapter 30

47 What is believed to have caused the isolation of marsupials’ ancestors to Australia and nearby islands? Mammals A. adaptive radiation B. continental drift C. habitat destruction D. reproductive isolation Standardized Test Practice Chapter 30

48 What competitive adaptive advantage do placental mammals have over marsupials? Mammals A. a more highly developed digestive system B. a pair of holes in the roof of the skull C. limbs positioned beneath their bodies D. more highly evolved social behavior Standardized Test Practice Chapter 30

49 Glencoe Biology Transparencies Mammals Chapter 30

50 Image Bank Mammals Chapter 30

51 mammary gland diaphragm cerebral cortex cerebellum gland uterus placenta gestation Mammals Vocabulary Section 1 Chapter 30

52 monotreme marsupial placental mammal therapsid Mammals Vocabulary Section 2 Chapter 30

53 Mammals Animation Chapter 30  Visualizing the Digestive Systems of Mammals Visualizing the Digestive Systems of Mammals


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