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- Animalia | Encyclopedia. com
Animalia The kingdom Animalia, or Metazoa, includes all animals Animals are multicellular, eukaryotic organisms, which are heterotrophic, meaning they obtain nutrition from organic sources Most animals obtain nutrition by ingesting other organisms or decomposing organic material
- Animal - Encyclopedia. com
Animal Animals are creatures in the kingdom Animalia, one of the five major divisions of organisms (the others are: Monera or bacteria , Fungi , Protists or protozoans, and Plantae or plants) Animals are multicellular, eukaryotic organisms, with cells that do not have walls made of cellulose Animals are capable of voluntary, spontaneous movements, often in response to sensory perceptions
- Porifera - Encyclopedia. com
Porifera (Spongiaria, sponges) A phylum of aquatic Animalia, most of which are marine They lack definite tissues and organs, but have a filter-feeding system composed of flagellate cells, pores, and canals Most are covered externally by either a cortex or a dermis
- Kingdoms of Life - Encyclopedia. com
The eukaryotic Plantae, Fungi, and Animalia kingdoms contain mostly multicellular eukaryotes that differ in their structures, modes of nutrition, and life cycles (before reproduction)
- Cnidaria | Encyclopedia. com
Cnidaria Cnidaria is one of the more primitive animal phyla It includes aquatic organisms such as jellyfish, sea anemones, corals, and hydras Most cnidarians are marine, although a few, such as the well-known hydra, are freshwater species
- The Search for New Systems of Classification | Encyclopedia. com
His original class names of Mammalia, Aves, Amphibia, and Insecta, along with his kingdoms of Plantae and Animalia, have survived the test of time Scientists have since more than quadrupled the number of classes, and added many, many genera to Linnaeus's original list
- Reptile | Encyclopedia. com
Reptiles A reptile is an organism in the kingdom Animalia and the class Reptilia (Kingdoms are the main divisions into which scientists classify all living things on Earth; kingdoms are further subdivided into phylums [or divisions], classes, and orders ) The reptiles include more than 6,000 species grouped into four orders: the turtles (Chelonia), the snakes and lizards (Squamata), the
- Crustacean | Encyclopedia. com
A crustacean is a member of the phylum Arthropoda, the largest and most successful phylum in the kingdom Animalia It is also a member of the class Crustacea which is one of the three major groupings of arthropods (the other two are Arachnida and Insecta)
- Insects and Spiders - Encyclopedia. com
Insects are members of the Animalia kingdom and belong to the phylum Arthropoda, along with crustaceans There are many classes of arthropods, including the insects and arachnids Both are invertebrates, but insects have six legs, while arachnids have eight legs The arachnids include spiders, mites, ticks, scorpions, and harvestmen
- Locomotion - Encyclopedia. com
Locomotion Locomotion is the active movement from one place to another It does not include passive movements such as falling or drifting in currents of air or water Many bacteria and protozoa are capable of locomotion, but animals move over much greater distances by a much larger variety of means, such as burrowing, running, hopping, flying, and swimming The mode of locomotion used by an
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