Which of these is found in all deuterostomes?     3 tissue layers     a notochord     a dorsal hollow nerve cord     paired appendages     ALL of these features are found in all deuterostomes

The Cnidarian life-cycle varies from species to species. The species obelia is characterized by exclusively dominant medusa stage exclusively dominant polyp stage alternation between an asexual polyp form and sexual medusa form alternation between an asexual medusa form and sexual polyp form

Briefly describe:A. cnidarian adaptations that illustrate their major evolutionary advancements past spongesB. the differences between cnidarians and ctenophores and  why ctenophores are evolutionarily more advanced than cnidarians

Phylogenetic tree of some deuterostome relationships 2 embryo develops anus first, mouth second 5 6 7 8 6 9 10 11 1 sea star sea urchin Use the table below to fill in phylogenic features according to the number phylogenic tree. 3 lamprey Box # Phenotypic Feature 1 perch 2 3 goldfish 4 5 frog 6 7 123 rat 8 12 9 13 14 bat 10 11 15 lizard 12 13 16 bird 14 15 turtle 16

What animal is this? nemertean polychaete tardigrade arrow worm phoronid

Aquatic molluscs have a blood vascular system & metanephridia so they must also possess an unpartitioned coelom secretion kidneys terminal cells a partitioned coelom       If a respiratory pigment such as hemoglobin or hemocyanin is not present in blood the blood would not carry carbon dioxide the blood would not carry oxygen the blood would have decreased oxygen carrying capacity

Although tunicate larvae have a notochord, adult tunicates do not. The reason for this is; The notochord transforms itself into a backbone to help support the tunicate Adult tunicates are filter feeders and do not swim Adult tunicates swim by using small fins, not a notochord

I am confused on how to fill this out. Do I look at the polygentic tree

Which of the following statements is accurate? Choose all that apply. Which of the following statements is accurate? Choose all that apply. Check All That Apply All protostomes are triploblastic All deuterostoes are triploblastic All protostomes use the blastopore to form the anus. All deuterostomes use the blastopore to form the anus.

Part 3: Explain how protostomes are distinguished from deuterostomes.