chapter 29 29.1 class reptilia – pg. 852 “to creep” includes snakes, turtles, tortoises,...
TRANSCRIPT
Chapter 29
29.1 CLASS REPTILIA – pg. 852
“to creep”
• Includes snakes, turtles, tortoises, lizards, alligators, crocodiles, tuataras
• Dry, scaly skin• Claws
Gecko
CLASS REPTILIA• Gas exchange: lungs• Most have 3 chambered hearts• Ectothermic• Molting - shedding of the old skin
Diamondback Terrapins hatching
Hognose snakes hatching
•Internal fertilization / external development (most)
Galapagos Tortoises Diamondback Terrapin Tortoise
Loggerhead Turtle Hawksbill Turtle
Turtle or Tortoise?
CLASS REPTILIA• Jacobson’s organ - tastes the air
Only in Thailand!
29.2 Class Aves: pg. 861
includes all birds
CLASS AVES - “birds”
• All have feathers• Not all can fly
PeacocksPenguin
CLASS AVES• Four chambered heart• Endothermic
Pelicans
CLASS AVES• No teeth
CLASS AVES•Preening - feather maintenance•Molting - shedding of old feathers•Bones - thin & hollow
Less bone = less muscle
CLASS AVES• Internal fertilization /
external development• Incubation• Gas exchange– Air sacs & lungs
CLASS AVES• Variety of: – Legs– Feet– Wings– Eyes– Claws– Beaks
Pelicans
Birds evolved from the Theropod dinosaur