Hydra, obelia, and Physalia (AKA portugese-man-of-war)
hydras
organisms in the same order (APEX)
Two organisms that are in the same class but different orders are in the same phylum. A phylum is a level of taxonomy below kingdom and above class.
hornworts
Organisms are classified by Kingdom, Phylum, Class, Order, Family, Genus, Species, and Sub-species.
Class. (apex)
The hydrozoa refers to the taxonomic class of predatory animals and colonial animals that live in salt water. The members of hydozoa are related to corals and jellyfish.
Hydrozoa
polyp! The star coral is attached and is faceup
hydrozoa
Yes, jellyfish are free-swimming members of the phylum Cnidaria. They are found in several classes including; Scyphozoa, Staurozoa, Cubozoa and Hydrozoa.
Phylum Cnidaria, Class Hydrozoa
The largest class in the phylum Cnidaria is the class Hydrozoa.
one idea
hydrozoa
According to Wikipedia, it is of the class "Hydrozoa": http://en.wikipedia.org/wiki/Hydra_(genus)
Hydra belong to the phylum Cnidaria and the class Hydrozoa.
To identify organisms and determine how groups are related.