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What best describes frogs in terms of development?
They are parazoans and acoelomates
They are bilateria and protostomes
They are bilateria and deuterostomes
They are eumetazoa and radiata..
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- Give the order for the life cycle of the hydrozoan, Obelia, starting with the polyp form. Answers Growth into mature polyp Cells grow into Planula. Reproductive polyps form. Medusa buds. Meiosis occurs. Fertilization occurs.Coelom formation in Deuterostomes is ____________ whereas in Protostomes is _____________.Annelida and arthropoda are more complex that other, simpler invertebrate groups because they have O a body cavity O segmentation germ layers
- An organism classified in phylum Mollusca that is a predator with tentacles, a brain and complex eyes would be classified into which group? gastropod cephalopod bivalve none of the above Which structure from the list below is made up of specialized cells called cnidocytes? Tentacle Bud mesoglea epidermis (ectoderm) Teste (spermerary) Reproductive polyp Foot Ovary Feeding polyp Gastrovascular cavity Mouth hydrostatic skeleton medusaWhich of the following is not a characteristic found in sea stars? Walking on tube feet An exosekeleton Deuterostome development A bilaterally symmetric larvaeCE Which of the following is a synapomorphy of the Anthozoa? Exoskeletons of calcium carbonate O Corals and sea anemones Absence of medusa stage Presence of planula larva stage Presence of cnidac
- The planula stage in Cnidarians is similar to what life stage in two other non-animal organisms? Explain how they are similar and why they are necessary. Please pay attention, it is talking about NON-animal organisms. Please talk about the stages ONLY.Please match the term with the description. the anterior end of a tapeworm that attaches to the inside lining of its host's digestive tract [ Choose ] [Choose] medusa describes the number of tissue layers in polyp coelom Cnidarians cnidocytes monoecious the cells that move water through a sponge gastrovascular cavity acoelom pharynx the cells that produce nematocysts scolex gonozooid osculum pseudocoelom triploblastic choanocytes diploblastic spongocoel water leaves a sponge through this opening proglottid spicule ventral sucker an incomplete digestive tract a planarian uses this to suck up food particles [ Choose ] a fluke uses this to hang onto its host's [ Choose ] tissues > > >Which phylum is characterized by a "tube within a tube" structure? O Echinodermata (O Mollusca O Arthropoda O Annelida
- What type of symmetry is seen in the roundworm? Does it exhibit cephalization? Ascaris is a parasite that swims constantly in human intestines. What structure protects the nematode from being digested? View the Trichinella slide. Trichinella is also a parasite. It can infect humans as well as other mammals like pigs, bears, and rodents. If untreated, it can lead to death.What mammal tissue does this roundworm infect?Draw a picture below of the Trichinella as viewed under the microscope. Although not mentioned on the website, if available view the live vinegar eel specimens. If there are no live specimens available, check out this you tube video instead: https://www.youtube.com/watch?v=UnjwvtFvyeQDescribe the movement of the vinegar eels.Do they have a complete or incomplete digestive system?1. Describe a function for the following structures and name the phylum/class in which these structures are found. Structures Function Phylum/Class Spicules Nematocytes Notochord Tube feet Polyp Choanocytes Pharyngeal slits Amoebocytes DenticlesGrantia Sponge Are the radial canals and the spongeocoel connected or seprate? IS the spongeocel a true coelom, a pseudocoelm, or neither? What is the direction of water flow in the sponge and are they multicellular? What functions do each of the different kinds of cells have? Are they diploblastic,triploblastic, or neither?