Cnidaria is a phylum containing over 10,000 species of animals found
exclusively in aquatic ... Some, however, omit either the polyp or the medusa
stage. .... the polyp and medusa forms, or of zooid...
polyp and medusa names for the two body forms, one nonmotile and one
typically ... In such organisms the polyp, by budding, gives rise to medusae,
which either ... the polyp exists, as in the hydra and the sea anemone, the
organism has the ...
You will identify and compare and contrast the ... Although sponges do not
resemble more familiar animals, they carry on the same ..... Polyp form has a tube
-shaped body with a mouth surrounded .... either the polyp or medusa stage.
The main characteristic that separates invertebrates from other organisms is the
... Cnidarians exhibit two basic body forms called polyp and medusa. ... Habitat -
They may be aquatic either marine or fresh water; or terrestrial; free-living and ...
All Cnidarians (anemone like organisms) share a similar body plan. ... of
Cnidarians exists as either a polyp or medusa that help taxonomists identify them
. ... They may occur as microscopic attached forms, or be fifty feet long and live in
Many members of the phylum exist only in one form or the other. ... Compare this
organism with that that of Metridium, a marine polyp known as a sea anemone (
Perry & Morton, Fig. 90c) ... Can you identify the gastrodermis and epidermis? ...
A container of small organisms (either the multicellular arthropod Daphnia or the
Corals, hydra, & sea anemones exist in the polyp form as adults. CORAL
POLYPS. Medusa forms are usually free-swimming, bell-shaped animals with
2 days ago ... The nematocyst is fired either by the tentacle touching prey, or in some ... In the
Medusoid form, the organism is essentially upside-down, with the mouth and ...
Most hydroids alternate between a polyp and a medusa stage, although ... They
exist only in the polyp stage and obtain their food by filter feeding.
Both polyp and medusa forms consist of a digestive sac, the coelenteron,
surrounded ... Medusae are usually free-swimming and either propel themselves
using ... This hydrostatic pressure allows the animals to hold their shape without
bones ... Most anthozoan species exist exclusively in the polyp form and do not
Dec 2, 2012 ... The "immortal jellyfish" can transform itself back into a polyp and begin life anew.
... depending on their stage in the life cycle, resemble either a jellyfish or a soft
coral. ... Among the hundreds of organisms he collected was a tiny, relatively .... A
Turritopsis medusa, however, sinks to the bottom of the...