1. In small-bodied marine invertebrates, the skin is the most important excretory organ . 2. It occurs in modified excretory organs known as Malpighian tubules in the abdomen. 3. Although the body contains a haemocoel, there are no circulatory, respiratory, or excretory organs . 4. They may also be simply excretory organs ( hydathodes ), used for exuding surplus metabolic products. 5. The excretory organs of barnacles are maxillary glands. 6. These beetles have an excretory organ that produces an odor telling the ants they mean no harm. 7. Starfish have no distinct excretory organs ; waste ammonia is removed by diffusion through the tube feet and papulae. 8. The FCC generally describes indecency as programming that explicitly depicts or describes sexual or excretory organs or functions. 9. In almost every segment is a pair of excretory organs called nephridia, which are derived from coelom tissue. 10. The heart is divided into two equal halves, each with its own nephridial excretory organs , which empty into the mantle cavity.
