Created by Noelia Sanchez
almost 4 years ago
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Question | Answer |
Animals can be divided into two groups. | VERTEBRATE AND INVERTEBRATE. |
Vertebrate animals are those animals that have skull and bony or cartilaginous spine. | Invertebrate animals are characterized by not having bony structures. Invertebrate animals represent the majority of animals on planet Earth. |
Vertebrate animals can be divided into 5 groups: | Birds Amphibians Mammals Reptiles Fishes |
BIRDS | Birds are vertebrate animals with the body covered with feathers and with the forelimbs transformed into wings. And they reproduce by eggs. |
AMPHIBIANS | Amphibians were the first vertebrates to adapt to a semi-terrestrial life. Their skin is bare and wet. And their limbs are muscular legs, which allow them to swim or jump. |
MAMMALS | They are terrestrial and aquatic animals, some are capable of flying. Their bodies are covered with hair. They breathe through lungs. |
RESPTILES | Most reptiles are adapted for terrestrial life.. Tneir body is covered in scales. And their limbs are shaped like legs, which are usually very short. Some do not. |
FISHES | Fish are aquatic, gill-breathing vertebrate animals. They are covered in scales and have fins, which allow them to be in continuous movement in the water. Their body ends in a stronger fin that forms the tail. |
Invertebate animals also can be divided into 5 groups: | Mollusks Echinoderms Arthropods Worms Poppies and Jellyfish |
MOLLUSKS | Mollusks lack a vertebral column and an internal articulated skeleton. They have soft bodies and some have shells. |
ECHINODERMS | Echinoderms are marine and have radial symmetry. |
ARTHROPODS | Their bodies are articulated in pieces that move. |
WORMS | Worms are invertebrate animals with a soft and elongated body. They live in moist soils or in water. |
COELENTRATES | Coelenterates lack an external skeleton, except for Stone Corals. Their respiration is cutaneous, they have radial symmetry, and also have stinging cells. |
EXAMPLES OF BIRDS - Sparrow - Parrot | EXAMPLES OF AMPHIBIANS - Frog - Tadpole |
EXAMPLES OF MAMMALS
- Elephant
- Cat
Image:
Images (binary/octet-stream)
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EXAMPLE OF REPTILES - Snake - Crocodile |
EXAMPLES OF FISHES - Shark - Eel | EXAMPLES OF MOLLUSKS - Snail - Octopus |
EXAMPLES OF ECHINODERMS - Starfish - Sea lily | EXAMPLES OF ARTHROPODS - Butterfly - Spider |
EXAMPLES OF WORMS - Leech | EXAMPLES OF COELENTRATES - Sponges - Jellyfish |
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