2018年5月18日 · Animalia (Metazoa) Multicellular organisms that develop from embryos; one of the three kingdoms of multicellular organisms (the other two being Fungi and Plantae). The kingdom includes all animals other than protozoons (some of which are colonial); Porifera (sponges) are sometimes excluded because their structure differs markedly from that of ...

2018年5月9日 · Animal Animals are creatures in the kingdom Animalia, one of the five major divisions of organisms. They are multicelled, eukaryotic (pronounced yookar-ee-AH-tik) organisms, meaning their cells contain nuclei and other structures called organelles, all of which are enclosed by thin membranes.

2018年5月23日 · Porifera (Spongiaria, sponges) A phylum of multicellular animals that are not included in the Animalia. Sponges are sessile, benthic, filter feeders with a bag-like body, a central cavity, and an outer surface pierced with tiny openings (ostia), through which water enters, and an upper, larger opening (osculum), through which it leaves.

2018年6月8日 · Chordata (kingdom Animalia) A large phylum comprising the animals that possess a rod of flexible tissue , which is protected in higher forms by a vertebral column. The phylum includes Urochordata (tunicates), Amphioxus, fish, …

Cnidaria. Cnidaria is one of the more primitive animal phyla. It includes aquatic organisms such as jellyfish, sea anemones, corals, and hydras.

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.

2018年5月18日 · Most scientists recognize three other eukaryotic kingdoms: Protista (most of which are single-celled organisms), Fungi, and Animalia (animals). The fungi, plants, and animals are thought to have evolved from different groups of protists. Plants are multicellular organisms that have evolved the ability to live on land.