Name
... Brachio- = the arm (brachiopod: also called lamp shells, these animals superficially resemble clams and other bivalve mollusks, but the two halves of the brachiopod shell are dorsal and ventral to the animal rather than lateral, as in clams. Cheli- = a claw (chelicerae: claw-like feeding appendages ...
... Brachio- = the arm (brachiopod: also called lamp shells, these animals superficially resemble clams and other bivalve mollusks, but the two halves of the brachiopod shell are dorsal and ventral to the animal rather than lateral, as in clams. Cheli- = a claw (chelicerae: claw-like feeding appendages ...
Echinoderms and Chordates
... The dorsal hollow nerve cord is derived from ectoderm that sinks below the surface of the skin and rolls into a hollow tube during development. In chordates, it is located dorsally to the notochord. In contrast, other animal phyla possess solid nerve cords that are located either ventrally or latera ...
... The dorsal hollow nerve cord is derived from ectoderm that sinks below the surface of the skin and rolls into a hollow tube during development. In chordates, it is located dorsally to the notochord. In contrast, other animal phyla possess solid nerve cords that are located either ventrally or latera ...
Echinoderms and Chordates
... The dorsal hollow nerve cord is derived from ectoderm that sinks below the surface of the skin and rolls into a hollow tube during development. In chordates, it is located dorsally to the notochord. In contrast, other animal phyla possess solid nerve cords that are located either ventrally or latera ...
... The dorsal hollow nerve cord is derived from ectoderm that sinks below the surface of the skin and rolls into a hollow tube during development. In chordates, it is located dorsally to the notochord. In contrast, other animal phyla possess solid nerve cords that are located either ventrally or latera ...
ENVI 21 Life in the Ocean
... Most tube feet used for locomotion Tube feet around mouth modified as branched tentacles that pick up food from substrate or filter particles from water “Earthworms of the sea” Deposit feeders have long, coiled intestines (why?) ...
... Most tube feet used for locomotion Tube feet around mouth modified as branched tentacles that pick up food from substrate or filter particles from water “Earthworms of the sea” Deposit feeders have long, coiled intestines (why?) ...
Rocky Shore - Notice Nature
... Structure: The common starfish has 5 arms but species like the Sun starfish has up to 14 arms. The skeleton is external. The under surface of the animal is covered with 100’s of parallel ...
... Structure: The common starfish has 5 arms but species like the Sun starfish has up to 14 arms. The skeleton is external. The under surface of the animal is covered with 100’s of parallel ...
Sea Squirts - Natural Resources South Australia
... in and filter out the tiny plankton through their pharynx (like the throat in humans). The water then passes through their gills so they can breathe before it is expelled. ...
... in and filter out the tiny plankton through their pharynx (like the throat in humans). The water then passes through their gills so they can breathe before it is expelled. ...
Cnidaria and ctenaphora for typepad
... Secrete calcium carbonate to form “exoskeleton” - reef builders - attach to solid structures - zooxanthellae Sea Fans or Sea Whips Secrete gorgonin, a more flexible substance than calcium carbonate - attach to sea bottom, sand - zooxanthellae ...
... Secrete calcium carbonate to form “exoskeleton” - reef builders - attach to solid structures - zooxanthellae Sea Fans or Sea Whips Secrete gorgonin, a more flexible substance than calcium carbonate - attach to sea bottom, sand - zooxanthellae ...
Marine Animals
... Reproduction-Sea stars may reproduce sexually or asexually. There are male and female sea stars, but they are indistinguishable from one another. They reproduce by releasing sperm or eggs into the water, which, once fertilized, become free-swimming larvae that later settle to the ocean bottom. ...
... Reproduction-Sea stars may reproduce sexually or asexually. There are male and female sea stars, but they are indistinguishable from one another. They reproduce by releasing sperm or eggs into the water, which, once fertilized, become free-swimming larvae that later settle to the ocean bottom. ...
Animals, not plants! - Thanet Coast Project
... Variable in colour - from cream, yellow, brown to green. This sponge can be smooth or an irregular crumbly lump. Large pores or siphons - similar to mini volcanoes - can be seen dotted over the surface - as sponges feed on suspended matter in seawater. They can break up easily - hence the common nam ...
... Variable in colour - from cream, yellow, brown to green. This sponge can be smooth or an irregular crumbly lump. Large pores or siphons - similar to mini volcanoes - can be seen dotted over the surface - as sponges feed on suspended matter in seawater. They can break up easily - hence the common nam ...
Phylum:Echinodermata
... to echinoderms Series of water-filled canals with extensions called tube feet Originates as a modification of the coelom Ring canal surrounds the mouth, opens to the outside through a stone canal and an opening called the madreporite 5 (or multiples of) radial canals branch from the ring can ...
... to echinoderms Series of water-filled canals with extensions called tube feet Originates as a modification of the coelom Ring canal surrounds the mouth, opens to the outside through a stone canal and an opening called the madreporite 5 (or multiples of) radial canals branch from the ring can ...
Advanced Biology
... known as ossicles. May have spines or spicules that protrude through the skin. Echinoderm= “spiny skin” – Water Vascular System: network of water-filled canals ...
... known as ossicles. May have spines or spicules that protrude through the skin. Echinoderm= “spiny skin” – Water Vascular System: network of water-filled canals ...
Lecture #13
... – mouth opens to a short esophagus – esophagus leads into a larger cardiac stomach (oral stomach) for the receipt of food – then into a smaller pyloric stomach (aboral stomach) – pyloric stomach leads into digestive glands - called pyloric cecae – 2 per arm • secretory and absorptive functions ...
... – mouth opens to a short esophagus – esophagus leads into a larger cardiac stomach (oral stomach) for the receipt of food – then into a smaller pyloric stomach (aboral stomach) – pyloric stomach leads into digestive glands - called pyloric cecae – 2 per arm • secretory and absorptive functions ...
NOTES Ocean Life
... (sardines, herring, tuna) → tertiary consumers (toothed whales, sharks) INVERTEBRATES are generally soft-bodied animals that lack a rigid internal skeleton Cnidarians take their name from the large stinging cells called cnidoblasts Jellyfish, sea anemones, corals 9000 species worldwide Simpl ...
... (sardines, herring, tuna) → tertiary consumers (toothed whales, sharks) INVERTEBRATES are generally soft-bodied animals that lack a rigid internal skeleton Cnidarians take their name from the large stinging cells called cnidoblasts Jellyfish, sea anemones, corals 9000 species worldwide Simpl ...
phylum: echinodermata
... There is a sense organ at the tip of each arm that can ‘taste’ food and it is sensitive to light. ...
... There is a sense organ at the tip of each arm that can ‘taste’ food and it is sensitive to light. ...
Invertebrates
... molting, jointed appendages; open circulatory system https://www.youtube.com/watch?v (hemolymph); extensive =NGFDAA4g8Ew cephalization ...
... molting, jointed appendages; open circulatory system https://www.youtube.com/watch?v (hemolymph); extensive =NGFDAA4g8Ew cephalization ...
Taxonomy
... More than 9,000 species, name derives from cnidocytes cells (700 million years old) Mostly sessile some are free moving Radial symmetry Most have tentacles Simplest animal to have nerve cells (nerve net, no central nervous system) Nematocyst are there stinging organelles No excretory or respritory s ...
... More than 9,000 species, name derives from cnidocytes cells (700 million years old) Mostly sessile some are free moving Radial symmetry Most have tentacles Simplest animal to have nerve cells (nerve net, no central nervous system) Nematocyst are there stinging organelles No excretory or respritory s ...
Sea Snakes
... underwater for about half an hour at a time, but have the ability to hold their breath for around two hours, with some diving to depths of up to 100 metres. Each species of sea snake varies in size and colour, but all have the same general body shape. Their bodies are streamlined for movement throug ...
... underwater for about half an hour at a time, but have the ability to hold their breath for around two hours, with some diving to depths of up to 100 metres. Each species of sea snake varies in size and colour, but all have the same general body shape. Their bodies are streamlined for movement throug ...
Echinoderms and Hemichordates
... “Irregular” echinoids include the sand dollars and heart urchins that include some species that have become bilateral. Spines are usually short and are used in locomotion. ...
... “Irregular” echinoids include the sand dollars and heart urchins that include some species that have become bilateral. Spines are usually short and are used in locomotion. ...
Superphylum Deuterostomia
... holes in the skeleton in the form of tube feet. These tube feet can expand or contract based on the volume of water present in the system of that arm. By using hydrostatic pressure, the animal can either protrude or retract the tube feet. Water enters the madreporite on the aboral side of the echino ...
... holes in the skeleton in the form of tube feet. These tube feet can expand or contract based on the volume of water present in the system of that arm. By using hydrostatic pressure, the animal can either protrude or retract the tube feet. Water enters the madreporite on the aboral side of the echino ...
PHYLUM ECHINODERMATA ("spiny skin", 6,000 spp) 1. Marine 2
... Class Holothuroidea (1,100 spp) sea cucumbers No arms Body lengthened Tube feet modified into tentacles Plankton & detritus feeders (conspicuous casts) Long GI tract Cloaca modified for gas exchange Respiratory Tree - rectum pumps O2 ...
... Class Holothuroidea (1,100 spp) sea cucumbers No arms Body lengthened Tube feet modified into tentacles Plankton & detritus feeders (conspicuous casts) Long GI tract Cloaca modified for gas exchange Respiratory Tree - rectum pumps O2 ...
aboral surface
... are two large oval radial shields . Radial shields are an obvious feature of the aboral disks of most ophiuroids but those of Ophioderma are covered by dermal granules and cannot be seen. There are no distinct muscle layers in the body wall of ophiuroids. ...
... are two large oval radial shields . Radial shields are an obvious feature of the aboral disks of most ophiuroids but those of Ophioderma are covered by dermal granules and cannot be seen. There are no distinct muscle layers in the body wall of ophiuroids. ...
Echinoderms
... We have purple and tuxedo urchins. To locate pedicellaria on the tuxedo urchin focus on what appears to be smooth area between the spines. Various functions have been attributed to these structures. They have implecated in defense as well as feeding. They have been observed cleaning potential parasi ...
... We have purple and tuxedo urchins. To locate pedicellaria on the tuxedo urchin focus on what appears to be smooth area between the spines. Various functions have been attributed to these structures. They have implecated in defense as well as feeding. They have been observed cleaning potential parasi ...
Echinoderms
... are two large oval radial shields . Radial shields are an obvious feature of the aboral disks of most ophiuroids but those of Ophioderma are covered by dermal granules and cannot be seen. There are no distinct muscle layers in the body wall of ophiuroids. ...
... are two large oval radial shields . Radial shields are an obvious feature of the aboral disks of most ophiuroids but those of Ophioderma are covered by dermal granules and cannot be seen. There are no distinct muscle layers in the body wall of ophiuroids. ...
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.