AIM: What are the characteristics of mammals ? Explain the difference between monotremes, marsupials and placentals.

OBJ: Given notes and activity sheet SWBAT explain the characteristics of mammals and the difference between monotremes, marsupials and placentals with 70% accuracy

DN: HW check- Bird Activity SheetComplete & hand-in Birds Quiz scantron.

ACT: Introduction to Mammals (notes)Text, read p.132-140, Work on Mammals Activity Sheet

HW: Complete Mammals Activity Sheet; Work on Vertebrate Review Sheets and Animal Activity Sheet; Vertebrate Exam, Dec. 3

Mammal Characteristicsendotherms – warm blooded

4 chamber heart

fur/hair

breast (mammary glands, milk)

“care for young” behavior

lungs with diaphragm

advanced nervous system (complex brains for problem solving)

highly developed senses (large eyes, sonar, smell sensitivity)

Mammal Characteristics

Mammal AdaptationsTeeth Adaptations:

Incisors: cut

Canines: tear, slash

Molars: grind

Cold Environment Adaptations: to keep warm

Food (higher in calories, meat or fish)

Fur/hair

Fat

Movement Adaptations:

walk, run, hop, swing, glide,

swim (w/ flippers)

Three (3) Mammal GroupsMonotremes- lay eggs ex: spiny anteater, duck-billed platypus

Marsupials – partly developed young live in a pouch.

ex: koala bear, kangaroo, opossum

Placental Mammals – develop inside mothers body; diverse, subdivided based on eating and movement ex: carnivores (eat meat), marine (swim), rodents (gnaw), rabbits/hare (hop), trunk, insect eaters, toothless, hoofed, flying (wing), primates (large brain)

Monotremes

Marsupials

Mammal Diversity

More Mammal Diversityhttps://www.youtube.com/watch?v=RsV3bGPMTXo

Primates

Primates