AP BIOLOGY

Detailed explanation-1: -Organisms belonging to Phylum Mollusca excrete with the help of metanephridia . In some molluscs, the organ of Bojanus is the metanephridia which act as a kidney and performs excretion. Other organs perform excretion for different organisms.

Detailed explanation-2: -A metanephridium is a type of excretory gland. This gland is found in annelids, arthropods and molluscs. A metanephridium consists of an opening into the body cavity. This opening is funnel shaped and contains cilia. This is connected to a duct which opens to the exterior.

Detailed explanation-3: -Metanephridium is an excretory organ found in invertebrates like arthropods, annelids and molluscs. It has ciliated funnel structures which open into the body cavity that is attached to a duct. This structure finally opens to the invertebrate’s exterior.

Detailed explanation-4: -A metanephridium (meta = “after") is a type of excretory gland found in many types of invertebrates such as annelids, arthropods and mollusca. (In mollusca, it is known as the Bojanus organ.)

Detailed explanation-5: -The excretory organ of Mollusca is metanephridia.