Question

W

Which statement is true about the excretory system?
HTC
COS
O
A. The bladder has two urethras.
B. Each bladder connects to a ureter.
O
C. The kidneys contain villi.
O
D. The kidneys contain nephrons.
SUBMIT

Answer 1

D the kidneys contain nephrons

Step-by-step explanation:

Answer 2

The correct option is D) The kidneys contain nephrons.

Step-by-step explanation:

Option D is correct because each kidney comprises of millions of filtering units which are called nephrons. The nephrons contain the glomerulus and tubule. The glomerulus is involved in the filtration of the blood whereas the tubules transport the useful substances back to the blood and help in getting rid of waste material.

Other options like option B is false because the bladder does not connect the ureter. Each ureter connects the bladder to the kidneys of each side.