All of the following are characteristics of annelids except a coelom. a complete digestive tract. segmentation. excretion via nephridia. metamorphosis.
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a coelom.
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a complete digestive tract.
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segmentation.
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excretion via nephridia.
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metamorphosis.
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- Nephridia are found in jawless fishes. lancelets. annelids. cephalopods. echinoderms.Nematode worms and annelid worms share which of the following features? presence of a circulatory system molting absence of species with parasitic lifestyles presence of segmentation a digestive tract with two openings (a mouth and an anus)Embryos with cleavage pattern depicted in panel A exhibit mosaic development. True False B.
- Flatworms show bilateral symmetry and some cephalization. True False Some parasitic platyhelminths lost their digestive tract. True False Platyhelminths can remove excess water out of the body. True FalseIn echinoderms, the main coelomic compartment is completely converted into the water-vascular system. restricted to a small space around the gonads. the pyloric stomach. O missing. a somatocoel.The body plan of an annelid displays meaning that the body is divided into a series of repeated regions.
- what synapomorphic characteristic body plan is or has first appeared with the annelids? bartlebyCoelomates have an enclosed coelom completely lined with mesodermally derived tissue. Accelomates have an enclosed coelom partially lined with mesodermally derived tissue. Pseudocoelomates have no enclosed coelom. true or falseSelect all of the following that are characteristics of crustaceans. maxillary glands. monoecious calcium carbonate deposited in the exoskeleton. two pairs of antennae. antennal glands. a body with three tagmata external fertilization.
- Feeding and gas exchange in chordates is via pharyngeal gill slits. True False In tunicate larvae, the notochord is used to anchor the animal to the substrate. True False The madreporite located on the oral surface is to take water into the water vascular system. True FalseWhich structure of the ray-finned fishes allows for breathing in water while the fish is stationary? swim bladder operculum lateral line mucus glandsCoelomates are Multiple Choice animals that have no coelom. animals that have two coeloms. animals in which the coelom disappears at gastrulation. animals that have a fluid filled coelom. two embryos that develop in the same coelom.