Read the following statements carefully. (a) Sponges possess a water vascular system which helps in food gathering and respiratory exchange. (b) Cnidoblasts are used for anchorage, defense, and capture of prey in Coelenterates. (c) Annelids are pseudocoelomate animals with bilateral symmetry. (d) Radula is a file-like rasping organ for feeding present in Mollusca. (e) Arthropods possess a closed circulatory system. C

Step-by-step solution

Statement (a) is incorrect because sponges (Porifera) possess a water canal system, not a water vascular system (which is a characteristic feature of Echinoderms). Statement (b) is correct as cnidoblasts (or cnidocytes) present on the tentacles and body of cnidarians are used for anchorage, defense, and capturing prey. Statement (c) is incorrect because annelids are true coelomates, whereas aschelminthes are pseudocoelomates. Statement (d) is correct as the mouth of molluscs contains a file-like rasping organ for f