2018年5月18日 · Animalia The kingdom Animalia, or Metazoa, includes all animals. Animals are multicellular, eukaryotic organisms, which are heterotrophic, meaning they obtain nutrition …

2018年5月9日 · 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 …

Animal ecology concerns the relationships of individuals to their environments, including physical factors and other organisms, and the consequences of these relationships for evolution, …

2018年5月23日 · 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 …

2018年6月8日 · Chordata (kingdom Animalia) A large phylum comprising the animals that possess a rod of flexible tissue (notochord), which is protected in higher forms by a vertebral …

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 …

2018年6月27日 · Other eukaryotic kingdoms — the Plantae, Fungi, and Animalia — are each believed to be monophyletic . That is, all plants evolved from one ancestral plant, all animals …

Bacterial kingdoms Bacterial kingdoms are part of the classification scheme that fits bacteria into appropriate groupings based on certain criteria. The kingdom is the broadest classification …

2018年5月21日 · Bacteria Definition Bacteria are prokaryotes (unicellular organisms with no membrane-enclosed nucleus) with simple structures that typically range in size from about 0.5 …

Marine Invertebrates Invertebrates are animals that do not have a bony internal skeleton, although many do have hard outer coverings that provide structure and protection. More than 90% of all …