Which of the following organisms exhibit radial symmetry as adults?

In the animal kingdom, there are two broad phyla that exhibit radial symmetry: One of these is cnidarians, which include jellyfish, anemones, and corals. Jellyfish exhibit radial symmetry in four points around its center. Also, echinoderms, such as sea stars, urchins, and sea cucumbers.Click to see full answer. Consequently, what system do Cnidaria have that sponges lack?Some animals, most notably sponges, lack these tissue layers. Cnidarians (a group including coral and jellyfish) have only two of these layers, and are termed diploblastic. Flatworms, ribbon worms, humans, etc. have all three tissue layers, and are triploblastic. Table 1.Likewise, which difference distinguishes Protostomes from Deuterostomes? The major difference between protostomes and deuterostomes are how they develop in the early embryo stages. In protostomes the mouth opening is the first to be formed later followed by the anus. In deuterostomes the anus forms first followed by the mouth. Likewise, people ask, which group of organisms is it believed that animals evolved from? It is believed that early animal life, termed Ediacaran biota, evolved from protists at this time. Some protist species called choanoflagellates closely resemble the choanocyte cells in the simplest animals, sponges.Why are real bath sponges so soft quizlet?reassemble into a new organized sponge with each cell resuming its original job. Why are real bath sponges so soft? The harder silica or calcium spicules are absent and the softer spongin remains. Amoeboid cells capture food particles from the water.