Question

Keber’s organ is found in:
A) Sepia
B) Octopus
C) Pila
D) Unio

Answer 1

The Bojanus organ is named after Ludwig Heinrich Bojanus. The excretory system of a bivalve comprises a couple of kidneys called the organ of bojanus. These are arranged one of each side of the body underneath the pericardium. Every kidney comprises 2 sections (1)- glandular part (2)- a thin walled ciliated urinary bladder.

Complete answer:
The organs of Bojanus or Bojanus organs are excretory organs that serve the capacity of kidneys in a portion of the Molluscs. These are metanephridia that are found in certain molluscs, for instance in the bivalves. Some different molluscs have another sort of organ for excretion called Keber's organ.

Molluscs (or mollusks) are a significant phylum of invertebrate animals. A large part of them are marine. They have huge numbers in-shore, that is, in shallow water. They are the biggest marine phylum, with around 85,000 living species, 23% of all named marine living beings. They also are found in freshwater and on land also. Most molluscs have shells, however a few groups don't: octopods, slugs, and the gastropods known as sea slugs.

Keber's organs are also called as pericardial gland and is a large, reddish brown colored glandular mass, It is arranged anterolateral to the pericardium into which it releases the waste material. They are collected from that point by the kidney.

Unio is a genus of medium-sized freshwater mussels, aquatic bivalve mollusks in the family Unionidae, the river mussels. Unio is the type genus of the family Unionidae.

Hence, the correct answer is option D, i.e. Unio.

Note: Mollusks are extremely changed: they have a great diversity and variety. That might be the reason there is no word in English for the phylum all in all. "In an evolutionary sense, mollusks are plastic material". They have substantially more variety than their old rivals, the brachiopods.