Hydrozoa (hydrozoans; from Ancient Greek ὕδωρ (húdōr; "water") and ζώα (zóa; "animals")) is a taxonomic class of individually very small, predatory animals, some solitary and some colonial, …

Hydroid, any member of the invertebrate class Hydrozoa (phylum Cnidaria). Most hydroids inhabit marine environments, but some hydroids have invaded freshwater habitats. Hydroids may be …

The Hy­dro­zoa is a sub­group of cnidar­i­ans con­taing­ing ap­prox­i­mately 3700 species. It is a di­verse group with a va­ri­ety of life cy­cles, growth forms, and spe­cial­ized struc­tures. Like many …

2 天之前 · The World Hydrozoa Database includes all extant hydrozoan species and is intended to act as a tool for anyone looking for taxonomic information, both specialists and non …

Hydrozoa (hydrozoans, from ancient Greek ὕδρα, hydra, "sea serpent" and ζῷον, zoon, "animal") are a taxonomic class of individually very small, predatory animals, some solitary and some …

Hydrozoa (hydrozoans; from Ancient Greek ὕδωρ (húdōr) 'water', and ζῷον (zôion) 'animal') is a taxonomic class of individually very small, predatory animals, some solitary and some colonial, …

2021年4月2日 · The hydrozoans (Hydrozoa) are animals that belong to an order of the phylum Cnidaria that includes almost entirely colonial organisms. These can be fixed to the substrate, …

Hydrozoa (phylum Coelenterata, class Hydrozoa) are coelenterates that are closely related to the hydra, sea anemones, corals, and jellyfish. Although a large majority of these species are …

The Hydrozoa are a class of the phylum Cnidaria. They are small predatory animals which mostly live in the sea. Their basic life form is the polyp. Some species live singly, others live in …

2018年5月23日 · Hydrozoa (hydroids; phylum Cnidaria) A class of multicellular, mainly marine animals in which the cells are derived from two layers, epidermis and gastrodermis …