Given below are some statements regarding different animals: A. Physalia exhibits tissue level of organisation and is triploblastic. B. Pheretima possesses a true coelom and a double ventral nerve cord. C. Sycon has a water vascular system. D. Macropus is homoiothermous and viviparous. E. Hippocampus has a cartilaginous endoskeleton. Select the correct statements from the options given below:

Step-by-step solution

Statement A is incorrect. Physalia belongs to the phylum Coelenterata (Cnidaria), which exhibits tissue level of organisation but are diploblastic animals. Statement B is correct. Pheretima belongs to the phylum Annelida. Annelids are true coelomates and possess a neural system with a double ventral nerve cord. Statement C is incorrect. Sycon belongs to the phylum Porifera, which possesses a water transport or canal system. The water vascular system is a characteristic feature of Echinoderms. Statement D is correct