The Key Evolutionary Development Seen for the First Time in the Sponges

Q13: The function of the notochord is taken

Q14: Of the mollusks,snails are in the class

Q15: The subkingdom of animals that lack symmetry

Q16: _ are small,aquatic pseudocoelomate organisms that have

Q17: It has often been said that the

Q19: The ability of a sponge cell to

Q20: Which of the following represents the more

Q21: Most of the phyla of the animal

Q22: A sponge feeds itself by _,drawing organisms

Q23: The first animal group to show extracellular