2. Reptiles and Birds

3. Reptiles RVertebrate- an animal that has a back bone. REctotherms- an animal whose main source of body heat is the external environment. REctotherms do generate metabolic heat, but they rely mainly on environmental heat. RExample -Snake - turtles RVertebrate- an animal that has a back bone. REctotherms- an animal whose main source of body heat is the external environment. REctotherms do generate metabolic heat, but they rely mainly on environmental heat. RExample -Snake - turtles

4. What is an Amniotic Egg? RThe adaptation for which the clade, amniote, is named. RNamed for one particular membrane, the aminion, formed by developing embryo. RAmniotic Egg contrasts with the amphibian egg. Benefits - water proof with a shell -protects embryo from drying out. -Cushions the embryo RThe adaptation for which the clade, amniote, is named. RNamed for one particular membrane, the aminion, formed by developing embryo. RAmniotic Egg contrasts with the amphibian egg. Benefits - water proof with a shell -protects embryo from drying out. -Cushions the embryo

5. Scales Purposes: Made of Keratin Water-tight skin Maintain internal environment For an example Snakes Fish turtles Purposes: Made of Keratin Water-tight skin Maintain internal environment For an example Snakes Fish turtles

6. Dinosaurs Reptiles Messozoic era was- Age of Reptiles. Varied from size from as small as hamsters to bigger than a whale Reptiles Messozoic era was- Age of Reptiles. Varied from size from as small as hamsters to bigger than a whale

7. Birds Veterbrates Ecdothermic- animal whose main source of body heat is generate from cell membrane. Veterbrates Ecdothermic- animal whose main source of body heat is generate from cell membrane.

8. Feathers Rmade of keratin Rhelp the bird stay warm Rcontribute to the birds being endotherms Rhave evolved from scales Rmade of keratin Rhelp the bird stay warm Rcontribute to the birds being endotherms Rhave evolved from scales

9. Heart R4 chambered heart RTwo separate ventricles which keeps oxygen rich and oxygen depleted blood separate in the heart RIs an adaptation for an active endothermic lifestyle R4 chambered heart RTwo separate ventricles which keeps oxygen rich and oxygen depleted blood separate in the heart RIs an adaptation for an active endothermic lifestyle

10. Bone Structure and Origin RHoneycombed structure making the bones light and strong RWhole skeleton weighs 100 grams RThe ancestor of birds was a small, feathered dinosaur RHoneycombed structure making the bones light and strong RWhole skeleton weighs 100 grams RThe ancestor of birds was a small, feathered dinosaur

11. Origin Continued RFossils show that dinosaurs from more than 100 million years ago are covered from tail to beak in feathers RArchaeopteryx, the most famous bird fossil ever found showed almost all reptile like characteristics, but it had feathers RFossils show that dinosaurs from more than 100 million years ago are covered from tail to beak in feathers RArchaeopteryx, the most famous bird fossil ever found showed almost all reptile like characteristics, but it had feathers

12. Done By: Mansi Shah Kevin Beregovich Dhruv Tejani Mansi Shah Kevin Beregovich Dhruv Tejani