Which one of the following statements correctly describes excretion?
A. It involves expelling of undigested food
B. It involves removal of waste products of metabolism
C. It involves carrying of carbon dioxide in blood
D. It involves release of energy from tissues
Answer:B
Which one of the following statements correctly describes excretion?
A. It involves expelling of undigested food B. It involves removal of waste products of metabolism C. It involves carrying of carbon dioxide in blood D. It involves release of energy from tissues