Hydra /ˈhaɪdrə/ is a genus of small, fresh-water animals of the phylum Cnidaria
and class ... cnidae), is clothed with highly specialised stinging cells called
cnidocytes. ... The cel...
But jellyfish are also harbingers of pollution that kills other marine organisms. ...
With about 200 species world-wide, one could easily learn to identify them. ... All
cnidaria have stinging cells adapted to stun and catch prey (see box). ... The
slightly stinging purple jellyfish, Pelagia noctiluca has only few catch tentacles
Cnadrians are another group of sea animals that have tentacles. ... All cndarians
have stinging cells called nematocytes that they use to envenomate prey or ...
Sea anemones and corals have the polyp form, while jellyfish are typical
medusae. ... small (or thin) organisms (ones which have a large surface area
compared to their volume) ... The tentacles are covered with stinging cells (
It includes aquatic organisms such as jellyfish, sea anemones, corals, and hydras
. ... tentacles, and many also have nematocysts (specialized stinging cells).
Hydra are truly fascinating small aquatic animals. ... If disturbed, a hydra will
contract its body and tentacles, so that it now resembles a small 'blob'. ... They
have a number of different types of stinging cells, called nematocysts, on their
Sep 24, 2014 ... Moon jellies have short tentacles along the outer margins of the bell that are
packed with nematocycts, or stinging cells. Jellies use these cells ...
A common organism to study in a biology lab is the hydra. ... Anemones are often
very colorful and have hundreds of tentacles that wave in the water currents while
... The fish becomes paralyzed by the stinging cells and eventually is pushed into
the anemone's ... In a single sentence, identify the MAIN POINT of the article.
Unlike more complex animals, cnidarians are designed around 2 sheets of ... of
hydra have been recorded in the Great Plains, but most are difficult to identify ...
Classification depends on the structure of the eggs and stinging cells (see below)
. All of these species have tentacles that are similar in length to the column or ...
Using their tentacles, polyps feed on microscopic organisms in the water. ... For
defense and feeding jellyfish have specialized stinging cells which contain
venom. ... Learning how to identify the different species can help you decide