Question

In man, kidney is

• A. Pronephros
• B. Mesonephros
• C. Metanephros
• D. None of the above

Answer 1

The correct option is C Metanephros

Stages of kidney development:

• Pronephros is the earliest nephric stage in humans and constitutes the mature kidney in most primitive vertebrates.
  
• Mesonephros develops by the formation of mesonephric tubules from the intermediate mesoderm, it is the principal excretory organ during early embryonic life (4—8 weeks). It gradually degenerates, although parts of its duct system become associated with the male reproductive organs.
  
• Metanephros arises caudal to the mesonephros at five weeks of development; it is the permanent and functional kidney in higher vertebrates. It is derived from the intermediate mesoderm. The ureteric bud arises as a diverticulum from the Wollfian duct, close to the entrance to the cloaca and grows towards and inside the metanephric mesenchyme.
  

So, the correct answer is 'Metanephros'.