Chapter 30 Mammals Section 1 Mammalian Characteristics Section
- Slides: 52
Chapter 30 Mammals Section 1: Mammalian Characteristics Section 2: Diversity of Mammals Click on a lesson name to select.
Chapter 30 Mammals 30. 1 Mammalian Characteristics Hair and Mammary Glands § Two characteristics that distinguish members of class Mammalia from other vertebrate animals are hair and mammary glands.
Chapter 30 Mammals 30. 1 Mammalian Characteristics Functions of Hair 1. Insulation 2. Camouflage 3. Sensory devices 4. Waterproofing 5. Signaling 6. Defense
Chapter 30 Mammals 30. 1 Mammalian Characteristics Other Characteristics § Endothermy § Source of body heat is internal. § Heat is produced by a high metabolic rate. § Body temperature is regulated by internal feedback mechanisms.
Chapter 30 Mammals 30. 1 Mammalian Characteristics Feeding and Digestion § Daily intake of food is used to generate heat to maintain a constant body temperature.
Chapter 30 Mammals 30. 1 Mammalian Characteristics Visualizing the Digestive Systems of Mammals
Chapter 30 Mammals 30. 1 Mammalian Characteristics Trophic Categories 1. Insectivores 2. Herbivores 3. Carnivores 4. Omnivores
Chapter 30 Mammals 30. 1 Mammalian Characteristics Teeth § Reveal the life habits of a mammal § 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.
Chapter 30 Mammals 30. 1 Mammalian Characteristics Excretion § Kidneys excrete or retain the proper amount of water in body fluids. § Enables mammals to live in extreme environments Mammals
Chapter 30 Mammals 30. 1 Mammalian Characteristics Respiration § High levels of oxygen are required to maintain a high level of metabolism. § Mammals are the only animals that have a diaphragm.
Chapter 30 Mammals 30. 1 Mammalian Characteristics Circulation § Mammals require a consistent supply of nutrients and oxygen to maintain homeostasis. § Keeping oxygenated and deoxygenated blood separate makes the delivery of nutrients and oxygen more efficient.
Chapter 30 Mammals 30. 1 Mammalian Characteristics The Brain and Senses § Mammals have highly developed brains. § Cerebral cortex is responsible for coordinating conscious activities, memory, and the ability to learn. § Cerebellum is responsible for balance and coordinating movement.
Chapter 30 Mammals 30. 1 Mammalian Characteristics Complex Behavior Senses § 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.
Chapter 30 Mammals 30. 1 Mammalian Characteristics Reproduction § In mammals, the egg is fertilized internally. § Development of the embryo takes place in the female uterus. Movement § Mammals must find food, shelter, and escape from predators.
Chapter 30 Mammals 30. 2 Diversity of Mammals Mammal Classification § Monotremes § Marsupials § Placental mammals
Chapter 30 Mammals 30. 2 Diversity of Mammals Monotremes § Reproduce by laying eggs § Duck-billed platypus § Echidna
Chapter 30 Mammals 30. 2 Diversity of Mammals Marsupials § Very short period of development in the uterus § Crawl into a pouch made of skin and hair and continue development while being nourished by milk from the mother’s mammary glands Kangaroo
Chapter 30 Mammals 30. 2 Diversity of Mammals Placental Mammals § Give birth to young that do not need further development within a pouch Shrew § Represented by 18 orders Humpback whale
Chapter 30 Mammals 30. 2 Diversity of Mammals
Chapter 30 Mammals 30. 2 Diversity of Mammals Evolution of Mammals
Chapter 30 Mammals 30. 2 Diversity of Mammals Therapsids § A therapsid is an extinct vertebrate with both mammalian and reptilian features. § 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
Chapter 30 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 Mammals Chapter Diagnostic Questions Name the term that refers to a mammal’s ability to produce heat internally. A. endoderm B. endothermy C. ectoderm D. ectothermy
Chapter 30 Mammals Chapter Diagnostic Questions What classification of mammals reproduces by laying eggs? A. marsupial B. placental mammal C. monotreme D. therapsid
Chapter 30 Mammals Chapter Diagnostic Questions 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
Chapter 30 Mammals 30. 1 Formative Questions 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
Chapter 30 Mammals 30. 1 Formative Questions What is the tough, fibrous protein that makes up hair, nails, claws, and hooves? A. urea B. keratin C. cellulose D. collagen
Chapter 30 Mammals 30. 1 Formative Questions What is the source of body heat for mammals? A. hibernation B. insulation C. metabolism D. respiration
Chapter 30 Mammals 30. 1 Formative Questions Which part of the brain is more highly developed in mammals than in other animals? A. cerebrum B. hypothalamus C. medulla D. optic lobe
Chapter 30 Mammals 30. 1 Formative Questions 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
Chapter 30 Mammals 30. 2 Formative Questions Which mammals have reptilian features, such as laying eggs? A. cetaceans B. marsupials C. monotremes D. sirenians
Chapter 30 Mammals 30. 2 Formative Questions Which mammals use their two pairs of razorsharp incisor teeth to gnaw through wood, seed pods, or shells to get food? A. artiodactyls B. insectivores C. lagomorphs D. rodents
Chapter 30 Mammals 30. 2 Formative Questions Which animals are cetaceans? A. deer and goats B. moles and shrews C. dolphins and whales D. manatees and dugongs
Chapter 30 Mammals 30. 2 Formative Questions Why did mammals undergo extraordinary adaptations to the environment after the disappearance of dinosaurs? 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.
Chapter 30 Mammals Chapter Assessment Questions True or False The graph shows that large animals such as elephants have a high metabolic rate.
Chapter 30 Mammals Chapter Assessment Questions Select the mammal that is a member of the order Chiroptera. A. hedgehog B. ape C. anteater D. bat
Chapter 30 Mammals Chapter Assessment Questions 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.
Chapter 30 Mammals Standardized Test Practice Which animal eats the least amount of food as a percentage of its body mass? A. elephant B. shrew
Chapter 30 Mammals Standardized Test Practice Why is a high metabolic rate necessary for the shrew’s survival?
Chapter 30 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 Mammals Standardized Test Practice How does a herbivore’s digestive tract compare to the digestive tract of this carnivore?
Chapter 30 Mammals Standardized Test Practice 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.
Chapter 30 Mammals Standardized Test Practice How do ruminants benefit from having bacteria in their stomachs? A. They can be omnivorous. B. They can digest meat. C. They can filter urea. D. They can process cellulose.
Chapter 30 Mammals Standardized Test Practice Which teeth are more highly developed in a mountain lion? A. canines B. incisors C. molars D. premolars
Chapter 30 Mammals Standardized Test Practice What is believed to have caused the isolation of marsupials’ ancestors to Australia and nearby islands? A. adaptive radiation B. continental drift C. habitat destruction D. reproductive isolation
Chapter 30 Mammals Standardized Test Practice What competitive adaptive advantage do placental mammals have over marsupials? 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
Chapter 30 Mammals Glencoe Biology Transparencies
Chapter 30 Mammals Image Bank
Chapter 30 Mammals Vocabulary Section 1 mammary gland placenta diaphragm cerebral cortex cerebellum gland uterus gestation
Chapter 30 Mammals Vocabulary Section 2 monotreme marsupial placental mammal therapsid
Chapter 30 Mammals Animation § Visualizing the Digestive Systems of Mammals
- Mammals characteristics
- Pelycosaurs
- Vertebrates and invertebrates
- Chapter 30 section 2 diversity of mammals
- Characteristics of marine mammals
- Characteristics of placental mammals
- Whale characteristics
- Monetremes
- Mammals characteristics
- Animals and their characteristics
- Characteristics of mammals
- Whale evolution timeline
- Characteristics of marine mammals
- Nn small
- Orca whale eyespot
- The mcgraw-hill
- Glycolyaia
- Diagram of heart with labelling
- The mammalian excretory system
- Bunodont lophodont selenodont secodont
- Mammalian excretory system
- Mammalian excretory system
- Mammalian biomanufacturing
- Mammalian excretory system
- Cartilage in trachea function
- Diving reflex
- Mammalian lung diagram
- 32-1 introduction to mammals answer key
- Whats the opposite of a mammal
- Digestion in fish
- Rabbits are small mammals in the family
- Difference between sexual and asexual reproduction
- What us a mammal
- Plantigale
- About mammals
- Mamals life cycle
- Amphibians reptiles mammals birds fish
- Whales are sea living mammals they therefore
- What are some special characteristics
- Are birds mammals
- Animal behavioral adaptations examples
- Discuss the importance of homeostasis in mammals
- Cat cuticle pattern
- Stop poaching animals
- Alimentary canal of mammals
- Hair
- Some bacteria benefit mammals by helping with
- Mammals
- Mammals animals
- Synapsids
- Light can travels from the sun toefl
- Cenozoic mammals
- Male reproductive system of mammals