what are three characteristics of jellyfish?
435306
Because their body is 95% water, they are perfectly camouflaged. The body of a jellyfish exhibits radial symmetry and is divided into three main parts: the umbrella, the oral arms (around the mouth) and the stinging tentacles. They have an internal cavity, in which digestion is carried out.
1426683
['body length.', 'presence of a dorsal fin.', 'size and position of the dorsal fin.', 'shape and size of flippers.', 'shape of the head and general body shape.', 'presence of a beak.', 'shape of the blow.', 'body colour and patterns.']
1472812
['Habitat. aquatic, generally marine.', 'Symmetry. mostly asymmetrical.', 'Level of organisation. cellular level of organisation.', 'Water canal transport. Water enters through minute pores called ostia. ... ', 'Choanocytes. the collar cells that line the spongocoel and the canals.', 'Digestion. ... ', 'Skeleton. ... ', 'Hermaphrodite.']
1170134
['They are multicellular organisms which do not possess chlorophyll.', 'They are eukaryotic organisms.', 'Cell wall is absent.', 'Mode of nutrition is heterotrophic i.e. they depend on other organisms for food.']
558704
Jellyfish have a transparent, gelatinous body and an umbrella-shaped bell called a medusa. Tentacles with stinging cells hang from the bell. The stinging cells are called nematocysts. Sea nettles have a smooth, milky white bell that grows to about 4 inches in diameter.
544615
['A hard exoskeleton made of calcium - no internal skeleton.', 'The head has two compound eyes, two pairs of antennae, and three pairs of mouthparts.', 'A pair of green glands excrete wastes near the base of antennae.', 'The abdominal segments have swimmerets (swimming legs)']
1444619
Fascinating, elegant, and mysterious to watch in the water, take a jellyfish out of the water, and it becomes a much less fascinating blob. This is because jellyfish are about 95 percent water. Lacking brains, blood, or even hearts, jellyfish are pretty simple critters.
1121497
Under a microscope they look like an oval with fuzzy, leg-like cilia surrounding it. Zoom in further and you can see their nematocysts or stinging cells. The thimble jellyfish is endowed with powerful nematocysts because a little, jelly-like animal that doesn't sting is just that–a little, jelly-like animal.
468330
['These organisms are multicellular, eukaryotic and without chlorophyll.', 'The cells possess no cell walls and plastids.', 'Central vacuoles are absent but small vacuoles may occur.', 'Most of them are free moving (except sponges and some coelentrates)', 'Nutrition is primarily ingestive.']
115557
Jellyfish are mostly made of water, so they die quickly after washing up on shore. They're cold-blooded animals and can lose mobility when water temperatures are below normal.
1373647
['They are widely distributed, aquatic or terrestrial, parasitic or free-living.', 'Their body is elongated, cylindrical, unsegmented, worm-like, bilaterally symmetrical and tapering at both ends.', 'They are triploblastic animals with perivisceral cavity more extensive than that of platyhelminths.']
67462
['All living things breathe, eat, grow, move, reproduce and have senses.', 'Non-living things do not eat, grow, breathe, move and reproduce. They do not have senses.']
859267
['Choanocytes.', 'Water canal (aquiferous) system.', 'Organic and inorganic skeletons.', 'Totipotency.', 'Plasticity.']
1280686
Lacking brains, blood, or even hearts, jellyfish are pretty simple critters. They are composed of three layers: an outer layer, called the epidermis; a middle layer made of a thick, elastic, jelly-like substance called mesoglea; and an inner layer, called the gastrodermis.
410849
['Habit and Habitat. Paramecium has a worldwide distribution and is a free-living organism. ... ', 'Movement and Feeding. Its outer body is covered by the tiny hair-like structures called cilia. ... ', 'Symbiosis. ... ', 'Reproduction. ... ', 'Aging. ... ', 'Genome. ... ', 'Learning.']
1241541
['Skeleton more or less bony, vertebrae numerous.', 'Skin with mucous glands and embedded dermal scales.', 'some without scales.', 'Paired fins.', 'Mouth with many teeth (some toothless).', 'jaws present.', 'Respiration by gills supported by bony gill arches and covered by a operculum.']
276673
['They are bilaterally symmetrical.', 'They are triploblastic, which three layers.', 'They show organ system grade of organisation.', 'The body is soft and unsegmented.', 'Body is divisible into three regions – head, a visceral mass, and ventral foot.', 'Body is covered by a mantle and shell.']