PHYLUM ECHINODERMATA
... Ophiuroids are deposit feeders, and trap particles with their mucous-covered arms. The food is directed towards the mouth with cilia. Some ophiuroids drag their arms through the water to collect food, while others hold their arms up into the current. Ophiuroids can also capture prey by wrapping thei ...
... Ophiuroids are deposit feeders, and trap particles with their mucous-covered arms. The food is directed towards the mouth with cilia. Some ophiuroids drag their arms through the water to collect food, while others hold their arms up into the current. Ophiuroids can also capture prey by wrapping thei ...
3-18-05
... • A thin skin covers an endoskeleton of calcareous plates. • Unique to echinoderms is the water vascular system, a network of hydraulic canals branching into extensions called tube feet – function in locomotion, feeding, and gas exchange. • Separate sexes– fertilization external. • Larvae – bilatera ...
... • A thin skin covers an endoskeleton of calcareous plates. • Unique to echinoderms is the water vascular system, a network of hydraulic canals branching into extensions called tube feet – function in locomotion, feeding, and gas exchange. • Separate sexes– fertilization external. • Larvae – bilatera ...
September 2015 - Echinoderms - Jonathan Allen
... • Ophiuroidea possess individual lenses acting (maybe) as a compound eye • Covered by chromatophores that adjust intensity of light; focal depth corrsponds to nerve fibers below the lenses ...
... • Ophiuroidea possess individual lenses acting (maybe) as a compound eye • Covered by chromatophores that adjust intensity of light; focal depth corrsponds to nerve fibers below the lenses ...
Echinodermata
... • Echinoderms have a decentralized nervous system. • There is nervous tissue throughout the echinoderm connected by central nerve ring around its gut, but they have no real brain. • Some echinoderms instead have ganglia, which are large clusters of nerve cells . ...
... • Echinoderms have a decentralized nervous system. • There is nervous tissue throughout the echinoderm connected by central nerve ring around its gut, but they have no real brain. • Some echinoderms instead have ganglia, which are large clusters of nerve cells . ...
Marine Habitats
... zone between photic and aphotic, where little light penetration occurs, many animals tend to be black or red in color and have large, sensitive eyes, comb jellies and others migrate to the photic zone at night to feed ...
... zone between photic and aphotic, where little light penetration occurs, many animals tend to be black or red in color and have large, sensitive eyes, comb jellies and others migrate to the photic zone at night to feed ...
Echinoderms
... Soft bodies, tough and leathery skin Skeleton: ossicles have degenerated and buried in fleshy body Mouth is surrounded by several tube feet that have been modified into tentacles that capture small organisms they eat When threatened they can throw up their insides and grow new ones back ...
... Soft bodies, tough and leathery skin Skeleton: ossicles have degenerated and buried in fleshy body Mouth is surrounded by several tube feet that have been modified into tentacles that capture small organisms they eat When threatened they can throw up their insides and grow new ones back ...
echinoderms
... Metamorphosis: left side becomes oral surface of the adult and right side becomes aboral Larval mouth/anus disappear, gut migrates to adult position, and new mouth/anus open ...
... Metamorphosis: left side becomes oral surface of the adult and right side becomes aboral Larval mouth/anus disappear, gut migrates to adult position, and new mouth/anus open ...
The Echinoderms
... 35 ossicles _________________________________ mouth – pharynx – esophagus – long coiled intestine – ...
... 35 ossicles _________________________________ mouth – pharynx – esophagus – long coiled intestine – ...
Chapter 40-Echinoderms and Invertebrate Chordates
... period, but they have found few fossils of other species that must have lived during the Cambrian period. What might explain the large number of fossilized echinoderms? ...
... period, but they have found few fossils of other species that must have lived during the Cambrian period. What might explain the large number of fossilized echinoderms? ...
Phylum Echinodermata
... -water vascular system: madreporite, stone canal, circular canal, radial canals (usually along ambulacral grooves), tube feet -pedicellariae -dermal gills (=papulae) Body Organization -adult radially symmetrical, usually with five part (pentamerous) symmetry, or multiples of 5's -no distinct head or ...
... -water vascular system: madreporite, stone canal, circular canal, radial canals (usually along ambulacral grooves), tube feet -pedicellariae -dermal gills (=papulae) Body Organization -adult radially symmetrical, usually with five part (pentamerous) symmetry, or multiples of 5's -no distinct head or ...
Chapter 22 - Angelo State University
... • A madreporite, spines and pedicellariae are absent. • The upper surface has a mouth that opens into an esophagus and intestine; it then exits the anus. • Tube feet and mucous nets allow it to feed on small organisms in the ambulacral grooves. • It has a watervascular system, an oral ...
... • A madreporite, spines and pedicellariae are absent. • The upper surface has a mouth that opens into an esophagus and intestine; it then exits the anus. • Tube feet and mucous nets allow it to feed on small organisms in the ambulacral grooves. • It has a watervascular system, an oral ...
Phylum Echnodermata
... – Often pentaradial symmetry, body parts extend from the center along five spokes ...
... – Often pentaradial symmetry, body parts extend from the center along five spokes ...
+ Means = spiny skin Examples: Sea Stars, Sea urchins, Sea
... Eucoelomate (true coelom w/ peritoneum) Similarities to Chordates 1. Deuterostome Embryonic development (mouth develops second) * ...
... Eucoelomate (true coelom w/ peritoneum) Similarities to Chordates 1. Deuterostome Embryonic development (mouth develops second) * ...
Echinoderm Slideshow
... and they can have up to 21 arms. Their bodies are covered with long, thorn-like spines. When these spines penetrate the skin, chemical irritants are passed from the starfish to the predator. In humans it can cause swelling and a sharp stinging sensation that can take up to a week to subside. Natural ...
... and they can have up to 21 arms. Their bodies are covered with long, thorn-like spines. When these spines penetrate the skin, chemical irritants are passed from the starfish to the predator. In humans it can cause swelling and a sharp stinging sensation that can take up to a week to subside. Natural ...
Echinoderms
... They look a little like flowers, which is where their common name comes from. Sometimes they are called feather stars because of the feathery appearance of their feeding arms. They are attached to the sea floor at some points in their life cycle; at other times they are free-swimming. ...
... They look a little like flowers, which is where their common name comes from. Sometimes they are called feather stars because of the feathery appearance of their feeding arms. They are attached to the sea floor at some points in their life cycle; at other times they are free-swimming. ...
Echinoderms and Chordates
... – Radially symmetrical with medium to long spines – Move via tube feet – Often found on rocky surfaces – Aristotle’s Lantern: ...
... – Radially symmetrical with medium to long spines – Move via tube feet – Often found on rocky surfaces – Aristotle’s Lantern: ...
Echinoderms
... tentacles for feeding. Some burrow and capture food while others ingest sand and filter out detritus and ...
... tentacles for feeding. Some burrow and capture food while others ingest sand and filter out detritus and ...
Sea Urchin
... sharp, serve to protect the urchin from predators and aid in locomotion. • The spines can inflict a painful wound on a human who steps on one, but they are not seriously dangerous, and it is not clear that the spines are ...
... sharp, serve to protect the urchin from predators and aid in locomotion. • The spines can inflict a painful wound on a human who steps on one, but they are not seriously dangerous, and it is not clear that the spines are ...
Phylum Echinodermata
... • Gas exchange and excretion occur through cilia-lined sacs called bursae. • 2,000 identified species. • Usually have separate sexes. ...
... • Gas exchange and excretion occur through cilia-lined sacs called bursae. • 2,000 identified species. • Usually have separate sexes. ...
Coelomates: Protostomes and Deuterostomes Protostomes have
... mouth, mosaic development - mollusks, annelids, arthropods Deuterostomes have radial cleavage, the blastopore becomes the anus, regulative development - echinoderms, chordates ...
... mouth, mosaic development - mollusks, annelids, arthropods Deuterostomes have radial cleavage, the blastopore becomes the anus, regulative development - echinoderms, chordates ...
Coelomates: Protostomes and Deuterostomes Protostomes have
... mouth, mosaic development - mollusks, annelids, arthropods Deuterostomes have radial cleavage, the blastopore becomes the anus, regulative development - echinoderms, chordates ...
... mouth, mosaic development - mollusks, annelids, arthropods Deuterostomes have radial cleavage, the blastopore becomes the anus, regulative development - echinoderms, chordates ...
Echinoderms
... • Network of canals – run throughout body ending w/tube feet • Varying internal water pressure can extend or contract tube feet • Tube feet end in small suction cups ...
... • Network of canals – run throughout body ending w/tube feet • Varying internal water pressure can extend or contract tube feet • Tube feet end in small suction cups ...
Sea urchin
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Sea urchins or urchins (/ˈɜrtʃɪnz/), archaically called sea hedgehogs, are small, spiny, globular animals that, with their close kin, such as sand dollars, constitute the class Echinoidea of the echinoderm phylum. About 950 species of echinoids inhabit all oceans from the intertidal to 5000 m deep. The shell, or ""test"", of sea urchins is round and spiny, typically from 3 to 10 cm (1.2 to 3.9 in) across. Common colors include black and dull shades of green, olive, brown, purple, blue, and red. Sea urchins move slowly, and feed on mostly algae. Sea otters, starfish, wolf eels, triggerfish, and other predators hunt and feed on sea urchins. Their roe is a delicacy in many cuisines. The name ""urchin"" is an old word for hedgehog, which sea urchins resemble.