Cnidaria is a phylum containing over 10,000 species of animals found
exclusively in aquatic ... They have two basic body forms: swimming medusae
and sessile polyps, both of which are radially symmet...
Why wouldn't a jellyfish form a fossil? ... What is the sessile body form of a
cnidarian? ... It is called a jellyfish because it lives in the sea, although it isn't a
Cnidaria - jelly fish, polyps and medusae taxonomy, physiology, and body pattern
. ... sexually from medusae. Most medusae are mobile and the polyps tend to be
sessile. ... They are located in special cells called cnidocytes. There are over ...
Some species form a symbiotic relationship with green algae. Many species are ...
Apr 6, 2015 ... The sessile polyplike forms constitute the order Stauromedusae. ... region, but
members of the genus Rhizostoma, also called football jellyfish, ...
This body form is dominant in the adult true jellyfish, though they pass through a
polyp ... The “polyp” form is usually anchored (sessile) with the mouth facing
upward. ... These layers surround an inner cavity called the gastrovascular cavity.
Flagellated cells called choanocytes or collar cells line their internal body cavity
... Polyp forms are usually sessile with upright tentacles arranged around the
mouth at the top and ... Jellyfish & Portuguese man-of-war are medusa form as
Most scyphozoan jellyfishes—including most of the large jellyfish with which ... a
sessile (i.e. fixed-position), usually benthic (i.e. bottom dwelling) polyp called a ...
Sea anemones and corals have the polyp form, while jellyfish are typical
medusae. ... Cnidarians are classified into four main groups: non-moving (sessile
) ... layers (the ectoderm and the endoderm) separated by a jelly-like layer called
The polyp is a sessile, or nonmotile, organism; well-known solitary polyps ... The
medusa, when free swimming, is popularly known as a jellyfish. ... In addition to
this elaborate means of reproduction, the polyp can form new polyps by budding.
... with nonliving material, forming a plantlike structure called a hydroid colony.
Animals from the phylum Cnidaria have stinging cells called cnidocytes. ...
perhaps the most well-known medusoid animals are the jellies (jellyfish). Polyp
forms are sessile as adults, with a single opening to the digestive system (the