In biology we had to watch a video about Vertebrate and Invertebrates animals, and then sumerize the most important things about them.
Some vertebrates animals are aquiatic, others are terrestial and others fly. They can move in different ways like walking, jumping, flying, climbing, crawling and also running if its necesary. They are classified into five groups:
- Fish : All fishes live in water, exept from one or two like the mudskipper, which can spend a little time breathing air. They have three main characteristics: The first one is that they have a scaly skin, another is that they have glills and the last one is that they have fins. And that’s all for this group.
- Reptiles : Reptails do not need to go back into the water to breed because they lay eggs with rubbery shells on land, another coment of the eggs is that ther have a waterproof shell which stops them from drying out. They are obviously vertebrate animals and they have a scaly skin. Some reptails are : Crocodails, lizards, snakes, turtles, etc.
- Amphibians: Adult amphibians live on land, although, they always go back to water to breed. Some main feautures are that they are vertebrates with moist, thay have a scale-less skin, they lay eggs on water. Some examples of amphibians are : frogs and salamanders.
- Birds: Birds have a lot of important characteristics like they are vertebrates with feathers, their forelimbs have become wings, they lay eggs with hard shells, also they are endothermic, they have a beak and also, their hart has four chambers.
- Mammals: It is a very important group, because is the one that all humans belong to. Our feautures are very interesting like we have a placenta, when we are young we feed on milk from mammary glands, we are endothermic, we have a diaphragm, our heart has four chambers (like birds) and we also have a variety of teeths.
Firstly, Invertebrate animals DONT HAVE bones and they are all oviparous. They are classified into six groups: Sponges, Jellyfish and Corals, Worms, Molluscs, enchinoderms and finally arthropods.
- Sponges: Sponges are aquatic animals that are sal shaped and their body is full of pores
- Jellyfish and Corals: Jellysfish are invertebrate animals that live in the ocean. Their bodies are gelatinous and they have tentacles. Corals are tiny marine animals that produce limostone residue.
- Worms: Worms are soft and long animals. They move by dragging their body in the ground because they have not feet. They can be aquiatic and terrestial. Some can be harmful.
- Molluscs: They have a soft body without legs. They can be aquatic and terrestial. Some protect their soft bodies with shells.
- Enchinoderms: Enchinoderms are aquatic animals. Their bodies have calcereus plates that form the shell. Some are balloon shaped and are covered in spikes that theu use to defend themselves. Others are starshaped.
- Arthropods: Arthropods are invertebrate animals, that their body is covered by an external skeleton called culticle. They are classify by the number of legs they have: – Arthropods with six legs: Insects like ants and flies. – Arthropods with eight legs: Archanids like spiders and scorpions. – Arthropods with more than ten legs: Myriapods like a centipede. – Arthropods with no legs: Crustaceans like crabs and lobsters.