1. THE ANIMALS

2. VERTEBRATE ANIMALS They have an internal skeleton whose spine is part.
Vertebrate groups:
Mammal
Birds
Reptiles
Amphibians
Fish

3. MAMMALS
-They have the body covered with fur. -Most terrestrial mammals have legs and aquatic fins (Bats have wings). -They can be herbivores, carnivores or omnivores. -Breathe through lungs. -They are viviparous. (Babies are fed on breast milk)

5. BIRDS
-They have the body covered with feathers. -They have two wings and two legs. -Most have the ability to fly, but there are also birds, such as ostrich, who do not want to. -They can be herbivores, carnivores or omnivores. -Breathe through lungs. -They are oviparous.

7. REPTILES
-They have the body covered with scales. -Most have quite short legs, so they crawl for walking. (Except snakes.) -Most are carnivorous. -Breathe through lungs. -They are oviparous.

9. AMPHIBIANS
-They have naked and wet skin. -They have legs. The two hind legs are very developed and allow them to make large jumps, such as frogs. (Younger creatures move by swimming.) -Most are carnivorous. -Babies breathe through the gills, and adults breathe through the lungs and their skin. -They experience a metamorphosis to transform into adults.

11. FISH
-They have the body covered with scales. -They have fins of various types. -Almost all are carnivorous. -They breathe by gills. -They are oviparous.

13. INVERTEBRATE ANIMALS
Invertebrate animals do not have vertebral column. Some have no skeleton and others have an external skeleton. The sponges The celenterats Invertebrate The worms groups: Molluscs The echinoderms The arthropods

14. THE SPONGES
-They are aquatic -They have the body with the form of a sack, with many pores through which the water passes and the food enters. -They live fixed to the ground. (For example, the sponges that live in the seabed.)

16. THE CELENTERATS
-They are aquatic -They have a soft and rounded body, with an opening surrounded by tentacles. -Some live fixed to the ground and others swim, such as jellyfish.

18. THE WORMS
-They can be either aquatic or terrestrial. -They have soft body and can be flattened or cylindrical. -They travel through the movements of their body. (The earthworm, for example, dig galleries.)

20. MOLLUSCS
-Most are aquatic. (Terrestrials live in very humid places.) -They have a soft body and are protected, in many cases, by a shell. -They move by swimming or crawling. (Octopuses can move through the seabed with the help of tentacles.)

22. THE ECHINODERMS
-They are aquatic -They have a rounded body, cylindrical or with an starred shape. -They live fixed to the ground or move really slowly, such as starfish, that travels through the seabed using her body.

24. THE ARTHROPODS
-They live in aquatics and terrestrials environments. -They have the body covered by an external skeleton and articulated legs. -They travel by swimming, walking, jumping or flying. -It is the largest group of animals.

26. RESEARCH
1/ Explain what are the main functions of the vertebrate skeleton.

27. 2/ What is the metamorphism of the amphibians?
And what about insects?
Explain the process.

28. 3/ Explain the functions of the fish fins.

29. 4/ What kind of nutrition do vertebrate and invertebrate animals have?

30. 5/ Explain the type of reproduction of vertebrate and invertebrate animals.