Medusa - Ms. Alger
... • Intracellular digestion finishes • Any nondigested material exits through the mouth ...
... • Intracellular digestion finishes • Any nondigested material exits through the mouth ...
Major patterns of baupläne
... Water Vascular System • network of hydraulic canals — unique to echinoderms – ciliated hydrocoel – branch into tube feet – function in locomotion, feeding, and gas exchange ...
... Water Vascular System • network of hydraulic canals — unique to echinoderms – ciliated hydrocoel – branch into tube feet – function in locomotion, feeding, and gas exchange ...
The Deuterostomes
... animals, waternotochord, hollow vascular system, dorsal nerve cord, endoskeleton, and pharyngeal pouches, ...
... animals, waternotochord, hollow vascular system, dorsal nerve cord, endoskeleton, and pharyngeal pouches, ...
Kingdom Animalia Characteristics
... Not motile (sessile) Provide habitat for other animals • Eaten by starfish and some fish • Most primitive animal ...
... Not motile (sessile) Provide habitat for other animals • Eaten by starfish and some fish • Most primitive animal ...
Kingdom Animalia Characteristics
... Not motile (sessile) Provide habitat for other animals • Eaten by starfish and some fish • Most primitive animal ...
... Not motile (sessile) Provide habitat for other animals • Eaten by starfish and some fish • Most primitive animal ...
Chapter 11 Structure and
... appendages What is a crustacean? arthropod with two or three body sections, five or more pairs of legs, and two pairs of antennae What is an arachnid? arthropod with two body sections, four pairs of legs, and no antennae What are centipedes and millipedes? arthropods with two body sections and numer ...
... appendages What is a crustacean? arthropod with two or three body sections, five or more pairs of legs, and two pairs of antennae What is an arachnid? arthropod with two body sections, four pairs of legs, and no antennae What are centipedes and millipedes? arthropods with two body sections and numer ...
Abdomen Thorax Head
... Explain how this is advantageous for the worm. Having more light-sensitive cells in the front and back ends is advantageous, because the animal moves forward and may be attacked by a predator from the rear. ...
... Explain how this is advantageous for the worm. Having more light-sensitive cells in the front and back ends is advantageous, because the animal moves forward and may be attacked by a predator from the rear. ...
What is an animal?
... (a) Early organogenesis. The archenteron forms when lateral folds (b) pinch the embryo away from the yolk. The embryo remains open to the yolk, attached by the yolk stalk, about midway along its length, as shown in this cross section. The notochord, neural tube, and somites subsequently form much as ...
... (a) Early organogenesis. The archenteron forms when lateral folds (b) pinch the embryo away from the yolk. The embryo remains open to the yolk, attached by the yolk stalk, about midway along its length, as shown in this cross section. The notochord, neural tube, and somites subsequently form much as ...
Marine Animals Without a Backbone
... Cnidarians are usually one or the other---but sometimes spend time as both. ...
... Cnidarians are usually one or the other---but sometimes spend time as both. ...
Bryozoa & Echinodermata
... • ciliated ambulacral grooves on oral surface with tentacle-like tube feet for food gathering • body disc and stalk contain ossicles • madreporite, spines, and pedicellaria absent ...
... • ciliated ambulacral grooves on oral surface with tentacle-like tube feet for food gathering • body disc and stalk contain ossicles • madreporite, spines, and pedicellaria absent ...
Organismal Biology/33E
... Copyright © 2002 Pearson Education, Inc., publishing as Benjamin Cummings ...
... Copyright © 2002 Pearson Education, Inc., publishing as Benjamin Cummings ...
Chapter 7 Notes - Herscher CUSD #2
... – Mesoderm – gives rise to supportive tissues (bones), contractile tissues (muscles), and blood cells. – Endoderm – Most organisms with this level of organization develop organ systems. • Excretory, nervous, digestive, reproductive, circulatory systems ...
... – Mesoderm – gives rise to supportive tissues (bones), contractile tissues (muscles), and blood cells. – Endoderm – Most organisms with this level of organization develop organ systems. • Excretory, nervous, digestive, reproductive, circulatory systems ...
Phylum Cnidaria - G. Holmes Braddock High School
... Hydrostatic skeleton Nerve net Radial symmetry Saclike digestive system (only one opening for mouth/anus) • Two layers of cells with mesoglea (jelly-like material) in between. • Lack special organs for respiration, excretion, and have no blood ...
... Hydrostatic skeleton Nerve net Radial symmetry Saclike digestive system (only one opening for mouth/anus) • Two layers of cells with mesoglea (jelly-like material) in between. • Lack special organs for respiration, excretion, and have no blood ...
Sea Urchin - WordPress.com
... Adult barnacles look very different from their crustacean relatives. After birth, barnacle larvae look just like larvae of other crustaceans; however, when a barnacle metamorphoses, it attaches it self to a hard surface head first and creates a cone around its body made of calcium. Its modified legs ...
... Adult barnacles look very different from their crustacean relatives. After birth, barnacle larvae look just like larvae of other crustaceans; however, when a barnacle metamorphoses, it attaches it self to a hard surface head first and creates a cone around its body made of calcium. Its modified legs ...
Seastar coloring - davis.k12.ut.us
... through one arm and the central disc. After coloring, read below. The body wall of the sea star consists of the following from outside to in: a cuticle (not shown) secreted by the underlying epidermis; a subepidermal connective tissue layer supporting a calcareous skeleton of variously shaped jointe ...
... through one arm and the central disc. After coloring, read below. The body wall of the sea star consists of the following from outside to in: a cuticle (not shown) secreted by the underlying epidermis; a subepidermal connective tissue layer supporting a calcareous skeleton of variously shaped jointe ...
Arms
... pyloric ceca and a pair of gonads are present in each arm. Gastric hemal tufts are present. About 1500 Recent species are known. Exercise one: Try to film feeding in one of the species available of sea stars. Use Asterina (small) species. Obtain a specimen, place in a small dish and add a few (one m ...
... pyloric ceca and a pair of gonads are present in each arm. Gastric hemal tufts are present. About 1500 Recent species are known. Exercise one: Try to film feeding in one of the species available of sea stars. Use Asterina (small) species. Obtain a specimen, place in a small dish and add a few (one m ...
Sea Lion
... Sea Lion poo may be an important addition to the health of marine ecosystems, according to new research. The bacteria in an Australian sea lion's gut keep essential nutrients where they're most needed in the marine ecosystem, South Australian scientists say. Researchers from Flinders University in ...
... Sea Lion poo may be an important addition to the health of marine ecosystems, according to new research. The bacteria in an Australian sea lion's gut keep essential nutrients where they're most needed in the marine ecosystem, South Australian scientists say. Researchers from Flinders University in ...
Introduction to Animals Invertebrate Evolution and Diversity
... Animals have a wide variety of forms. The following developmental factors determine the body plan: Levels of organization : cells, tissue, organ, organ systems Arrangement of Germ layers: differentiate into different tissue types: • Endoderm (inner): digestive tract • mesoderm (middle): muscle ...
... Animals have a wide variety of forms. The following developmental factors determine the body plan: Levels of organization : cells, tissue, organ, organ systems Arrangement of Germ layers: differentiate into different tissue types: • Endoderm (inner): digestive tract • mesoderm (middle): muscle ...
Echinoderms - Austin Community College
... exert steady pull on valves in about a half hour the adductor muscles of bivalve fatigue and relax slightly to create a small gap between the shells ...
... exert steady pull on valves in about a half hour the adductor muscles of bivalve fatigue and relax slightly to create a small gap between the shells ...
Deuterostome Animals
... Class Ophiuroidea - Brittle stars • central disc containing the organ systems • arms longer, more slender than sea stars • use arms for locomotion, capable of rapid movement by muscle action • tube feet lack suckers • No anus. • Deposit, detritus, and suspension feeders ...
... Class Ophiuroidea - Brittle stars • central disc containing the organ systems • arms longer, more slender than sea stars • use arms for locomotion, capable of rapid movement by muscle action • tube feet lack suckers • No anus. • Deposit, detritus, and suspension feeders ...
phylum echinodermata
... you fold the ambulacral groove back. This is the radial nerve cord that connects with a circumoral nerve ring. The circulatory system is all but absent and its remnants form a hemal system closely associated with the first part of the tripartite coelom. You will not be able to see the system. ...
... you fold the ambulacral groove back. This is the radial nerve cord that connects with a circumoral nerve ring. The circulatory system is all but absent and its remnants form a hemal system closely associated with the first part of the tripartite coelom. You will not be able to see the system. ...
Invertebrates
... Annelida- segmented worms(repeated body segments) • Arthropoda- insects, shrimps, lobsters, and crabs • Echinodermata- sea stars, urchins, brittle stars ...
... Annelida- segmented worms(repeated body segments) • Arthropoda- insects, shrimps, lobsters, and crabs • Echinodermata- sea stars, urchins, brittle stars ...
Starfish (Sea Stars) Green Sea Anemone
... There are many different species of starfish, in many different colors. Starfish cannot live very long without water. Starfish have no head, tail or a true brain. Their skin is rough and leathery and usually has spines. Starfish usually have 5 arms, although some have as many as 44. All starfish can ...
... There are many different species of starfish, in many different colors. Starfish cannot live very long without water. Starfish have no head, tail or a true brain. Their skin is rough and leathery and usually has spines. Starfish usually have 5 arms, although some have as many as 44. All starfish can ...
Detailed information about common Alaska marine invertebrates.
... mating.) The female then extrudes the eggs, which she carries attached to her abdomen until they hatch. The tiny swimming larvae are part of the ocean’s plankton until they molt several times, change form, and settle to the sea floor to become adults. The female crab’s abdominal flap is broader and ...
... mating.) The female then extrudes the eggs, which she carries attached to her abdomen until they hatch. The tiny swimming larvae are part of the ocean’s plankton until they molt several times, change form, and settle to the sea floor to become adults. The female crab’s abdominal flap is broader and ...
Sea urchin
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.