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| 1. |
Which of the following traits is not a characteristic of echinoderms ? I. They have a complete digestive system with two separate openings . II. They possess a complex haemal and perihaemal system for circulation . III. Removal of nitrogenous waste takes place through cloacal aperture . IV . Sense organs are poorly developed.A. I and IIB. II and IIIC. Only IIID. I and IV |
| Answer» Correct Answer - C | |