EVERYDAY SCIENCE

Detailed explanation-1: -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-2: -Nephridia are the excretory organs in annelids.

Detailed explanation-3: -Protonephridia are present in Platyhelminthes and metanephridia in Annelids and Arthropoda.-It refers to the tubular, excretory structures in specific invertebrates, generally closing internally in the flame cells and possessing an external pore.

Detailed explanation-4: -Metanephridia collect the liquid from the celomatic cavity through a funnel-like structure called nephrostome. The coelomic fluid enters the tubulus, water and nutrients are reabsorbed, and the metabolic waste such as ammonia, urea, or uric acid is excreted.

Detailed explanation-5: -Metanephridia are excretory organ found in many invertebrates belonging to phylum anelida, phylum arthropoda and phylum mollusca.