1. 5/18 & 5/ th Grade Agenda
Collect HW: Reading & Notetaking 226 – 228
Collect Signed Grade Printout
Amphibians
Classwork: Design your own species
Video: Life (Amphibians & Reptiles)
Textbook Reading 486 – 494
HW: Reading & Notetaking p

2. Amphibians evolved from Fish
Mudskipper Fish (Type of Goby Fish)
It can live out of water for long periods
It can breath through its skin just like Amphibians

3. What are Amphibians? The word amphibian means “double life”
After beginning their lives in water
Most amphibians spend their adulthood on land
Returning to water to reproduce.

4. Life cycle of an Amphibian

5. Do tadpoles have lungs or gills?

6. Do frogs have lungs or gills?

7. Salamander Larvae

8. Some Amphibians are Legless
Caecilians (pronounced seh-SILL-yens)
No Legs
No scales
Usually Blind
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9. Caecilians Larvae

10. What are reptiles Reptiles are ectothermic Has Scales
Lays eggs on land
The ancestors of reptiles were the first vertebrates adapted to life completely out of water.

11. Amniotic Shell Lets the air in and out and keeps the embryo moist

12. Characteristics of Lizards

13. Can a turtle live outside it’s shell?
No!
The shell is it’s rib and backbone.

15. Characteristics of Mammals
endothermic vertebrates
four-chambered heart
skin covered with fur or hair.
Most mammals are born alive
young mammal is fed with milk

16. Do Dolphins have hair? Yes. Near their blow holes
Most of the hair disappear when they get older

17. What are the function of hair and fur?
Fur and hair prevent body heat from escaping
Helps maintain a stable body temperature in cold weather
Animals in cold regions have thicker coats of fur

18. When did the first mammals appear?
About 270 Million years ago
They were small mouse like animals
After the dinosaurs disappeared about 65 million years ago, larger mammals evolved

19. You can tell the type of food mammals eat by its skull & teeth.
What type of food does this animal eat?

20. You can tell the type of food mammals eat by its skull & teeth.
What type of food does this animal eat?

21. Do some mammals lay eggs?
Yes.
Monotremes lay eggs:
Two types of Monotremes are: Spiny Anteaters & Duck billed platypus

22. What are Marsupials? Marsupials are mammals The young are born alive
But at an early stage of development, they develop in a pouch on their mother’s body

23. Baby Kangaroo in mother’s pouch

24. What are Placental Mammals?
Placental mammal develops inside its mother’s body

25. Diversity of mammals
Most of the mammal species are bats and rodents