Animal Classification-(9 main Phyla of Animals) скачать в хорошем качестве

Animal Classification-(9 main Phyla of Animals)

Animal Classification-9 main phyla of animals.Animals are a very diverse group of organisms. They vary from a huge whale to an insect. What do all of these animals have in common? First, they are all multicellular organisms made from eukaryotic cells. In other words, each cell has a nucleus and membrane-bound organelles. Next, they are all consumers. ( heterotrophs) which mean they must eat other organisms. Next, they all use the protein collagen to attach cell tissue together. Most animals are diploid, meaning each cell has a homologous pair of chromosomes. This means they have two sets of chromosomes. One from mom and another from dad. Animals develop from an embryo There are more than 30 animal phylum, but more than 90 percent of animals can be found in the following 9 phyla. Phylum Porifera Sponges Phylum Annelida Segmented Worms (earthworms, leeches) Phylum Nematoda – The Roundworms Phylum Platyhelminthes – The Flatworms: planaria, tapeworms Mollusks (Mollusca) Includes snails, clams, slugs, squid, and their relatives. Arthropods (Arthropoda) The largest animal phylum, and have jointed external skeletons. Echinoderms (Echinodermata) Sea stars and sea urchins. Cnidaria Jellyfish, sea anemones All of these phyla contain animals that are invertebrates which means they do not have a vertebra. Chordates have a backbone Chordates (Chordata) Vertebrates-fish, amphibians, reptiles, birds, and mammals. ~-~~-~~~-~~-~ Please watch: "Study Skills Teacher's Secret Guide to your Best Grades"    • My new book-Study Skills Teacher's Se...   ~-~~-~~~-~~-~ * * For more Life Science videos and summaries see, http://www.moomoomath.com/Middle-Scho...