Phylum Cnidaria
... made up of two tissue layers – endoderm and ectoderm separated by mesoglea Have two body forms: polyp and medusa ...
... made up of two tissue layers – endoderm and ectoderm separated by mesoglea Have two body forms: polyp and medusa ...
Academic Script
... than broad when fully extended. Body is divided in to three regions- pedal disc, column and oral disc. The oral end of the body is flat or slightly convex, short and delicate. It bears numerous short hollow marginal tentacles. Many Sea anemones form symbiotic relationships with single-celled algae, ...
... than broad when fully extended. Body is divided in to three regions- pedal disc, column and oral disc. The oral end of the body is flat or slightly convex, short and delicate. It bears numerous short hollow marginal tentacles. Many Sea anemones form symbiotic relationships with single-celled algae, ...
Chapter 8 Phylum Cnidaria
... • Bell-, dish- or umbrella-shaped • Exumbrella: convex upper (aboral) surface • Subumbrella: concave lower (oral) surface – Mouth at center ...
... • Bell-, dish- or umbrella-shaped • Exumbrella: convex upper (aboral) surface • Subumbrella: concave lower (oral) surface – Mouth at center ...
he SEA iVettk of Chesapeahe
... shell. Soon they begin to crawl about on the bottom. They grow rapidly and become mature adults within two months. Probably they pass the winter hidden in the bottom and emerge when the water reaches about 11°C. (52°F). The life span of Cratena may be less than one year. There are other predators th ...
... shell. Soon they begin to crawl about on the bottom. They grow rapidly and become mature adults within two months. Probably they pass the winter hidden in the bottom and emerge when the water reaches about 11°C. (52°F). The life span of Cratena may be less than one year. There are other predators th ...
PHYLUMS OF INVERTEBRATE ANIMALS
... • Have a complete digestive system • Most are free-living, with few parasitic species ...
... • Have a complete digestive system • Most are free-living, with few parasitic species ...
Lab 2: Phylum Cnidaria
... The Cnidaria are the oldest of the true metazoan phyla. A fossil Hydrozoan from South Australia called Ediacara is 700 million years old, while numerous fossil Cnidarians exist from the Cambrian 500 million years ago. The Cnidarians, particularly the corals often make up an important component of th ...
... The Cnidaria are the oldest of the true metazoan phyla. A fossil Hydrozoan from South Australia called Ediacara is 700 million years old, while numerous fossil Cnidarians exist from the Cambrian 500 million years ago. The Cnidarians, particularly the corals often make up an important component of th ...
Kingdom Animalia pp
... Feeding: Sponges are ocean organisms and are attached to the ocean floor. They are filter feeders, meaning they filter food out of the water that flows through their bodies Respiration, Circulation, Excretion: All done by the flow of water through the body Response: Have no nervous system but can pr ...
... Feeding: Sponges are ocean organisms and are attached to the ocean floor. They are filter feeders, meaning they filter food out of the water that flows through their bodies Respiration, Circulation, Excretion: All done by the flow of water through the body Response: Have no nervous system but can pr ...
Phylum Echinodermata - Austin Community College
... inconspicuous anus in center of disc large sievelike madreporite toward one side aboral surface bears numerous pedicellariae keeps integument free of sponges, corals also used in feeding and defense Movement mainly by tube feet can adhere to any solid surface by the suction created and slowly creep ...
... inconspicuous anus in center of disc large sievelike madreporite toward one side aboral surface bears numerous pedicellariae keeps integument free of sponges, corals also used in feeding and defense Movement mainly by tube feet can adhere to any solid surface by the suction created and slowly creep ...
Invertebrates II
... 2. Identify and/or locate external and internal structures of the crayfish and grasshopper after dissecting examples of each. 3. Contrast the anatomy of the crayfish and the grasshopper, indicating how each is adapted to its way of life. 4. Describe the general characteristics of echinoderms and the ...
... 2. Identify and/or locate external and internal structures of the crayfish and grasshopper after dissecting examples of each. 3. Contrast the anatomy of the crayfish and the grasshopper, indicating how each is adapted to its way of life. 4. Describe the general characteristics of echinoderms and the ...
Invertebrates II
... 2. Identify and/or locate external and internal structures of the crayfish and grasshopper after dissecting examples of each. 3. Contrast the anatomy of the crayfish and the grasshopper, indicating how each is adapted to its way of life. 4. Describe the general characteristics of echinoderms and the ...
... 2. Identify and/or locate external and internal structures of the crayfish and grasshopper after dissecting examples of each. 3. Contrast the anatomy of the crayfish and the grasshopper, indicating how each is adapted to its way of life. 4. Describe the general characteristics of echinoderms and the ...
Chapter 11
... sea urchin, a member of the class Echinoidea. The sea urchin’s movable spines are attached to its internal skeleton, which is formed by bony plates that are fused. (As in the sea star, both the spines and endoskeleton are made of CaCO3.) This endoskeleton, which remains when a sea urchin dies, is so ...
... sea urchin, a member of the class Echinoidea. The sea urchin’s movable spines are attached to its internal skeleton, which is formed by bony plates that are fused. (As in the sea star, both the spines and endoskeleton are made of CaCO3.) This endoskeleton, which remains when a sea urchin dies, is so ...
Echinoderms and Chordates
... composed of ossicles covered by a spiny skin. Echinoderms possess a water-based circulatory system. The madreporite is the point of entry and exit for water for the water vascular system. The characteristic features of Chordata are a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a pos ...
... composed of ossicles covered by a spiny skin. Echinoderms possess a water-based circulatory system. The madreporite is the point of entry and exit for water for the water vascular system. The characteristic features of Chordata are a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a pos ...
Invertebrate taxa to know for BIO 111 2007
... Figure 49.25). These muscles work against the noncompressible coelomic fluid, which acts as a hydrostatic skeleton. ...
... Figure 49.25). These muscles work against the noncompressible coelomic fluid, which acts as a hydrostatic skeleton. ...
The Metazoa
... Again, in the more complex forms of these simple organisms fractal geometry is apparent ...
... Again, in the more complex forms of these simple organisms fractal geometry is apparent ...
Three Domains Now Three Domains and 6 Kingdoms
... Again, in the more complex forms of these simple organisms fractal geometry is apparent ...
... Again, in the more complex forms of these simple organisms fractal geometry is apparent ...
File
... • Contain a jelly-like layer between epidermis and gastrodermis called mesoglea • Single opening (mouth/anus) to gastrovascular cavity where food & water enter & wastes leave; called twoway digestive system • Have a oral surface (mouth/anus) and an aboral surface (opposite) ...
... • Contain a jelly-like layer between epidermis and gastrodermis called mesoglea • Single opening (mouth/anus) to gastrovascular cavity where food & water enter & wastes leave; called twoway digestive system • Have a oral surface (mouth/anus) and an aboral surface (opposite) ...
3 slides/page - University of San Diego Home Pages
... Regardless, very simple animals. No true tissues or organs Body is a perforated sac surrounding the spongocoel (internal cavity) Two layers a loose aggregate of cells – Epidermis – Choanocytes (collar cells) ...
... Regardless, very simple animals. No true tissues or organs Body is a perforated sac surrounding the spongocoel (internal cavity) Two layers a loose aggregate of cells – Epidermis – Choanocytes (collar cells) ...
Invertebrates I PORIFERA: The sponges PORIFERA: The sponges
... • Bristle worms (and many other names) • Mostly marine – Drift passively or crawl – Tube (fanworms) burrow, make shell of mucous and sand – Each segment with paired parapodia (extended area of skin) for locomotion, filter feeding, and gill function. ...
... • Bristle worms (and many other names) • Mostly marine – Drift passively or crawl – Tube (fanworms) burrow, make shell of mucous and sand – Each segment with paired parapodia (extended area of skin) for locomotion, filter feeding, and gill function. ...
INVERTEBRATES - LBHS Biology
... lilies, brittle star, sea biscuit _________ skinned animals Unique ________ _________ system Secondary _________ symmetry with no segmentation ...
... lilies, brittle star, sea biscuit _________ skinned animals Unique ________ _________ system Secondary _________ symmetry with no segmentation ...
document
... Radial Symmetry [in adults]-symmetrical arrangement of parts of an organism around a single main axis All echinoderms exhibit secondary radial symmetry, because they exhibit bilateral symmetry during larval development, but exhibit radial symmetry as adults. ...
... Radial Symmetry [in adults]-symmetrical arrangement of parts of an organism around a single main axis All echinoderms exhibit secondary radial symmetry, because they exhibit bilateral symmetry during larval development, but exhibit radial symmetry as adults. ...
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.