Question

Which of the following are the organ for excretion seen in Nereis and Locusta?

• A. Flame cells and nephridia
• B. Nephridia and malpighian tubules
• C. Nepridia and metanephridia
• D. Flame cells and malpighian tubules

Answer 1

The correct option is B Nephridia and malpighian tubules

Flame cells, nephridia and malphigian tubules are various types of excretory organs seen in several invertebrates.
Flame cells are excretory cells present in the members of the phylum platyhelminthes. They maintain the ionic balance and regulates the osmostic pressure. A bundle of flame cells are calle protonephridia.
A much evolved excretory organ is seen in annelids, which is called as nephridia.
Malphigian tubules are tubular structure which performs the function of excretion in arthropods.
Nereis is an annelid and Locusta is an arthropod. Thus nephridia and malphigian tubules are the excretory organs in neries and locusta respectively.