The exchange of oxygen between blood and air takes place in the _______?
B. Lungs
C. Heart
D. All of these
Correct Answer: B. Lungs
» Read More…
B. Lungs
C. Heart
D. All of these
A. To store water and other substances
B. To transport materials within the cell
C. To generate energy for the cell
D. To provide structural support for the cell
A. Invertebrates
B. Vertebrates
C. Both a & b
D. None of these
A. Invertebrates
B. Vertebrates
C. Both a & b
D. None of these
A. Small pox
B. BCG
C. Cholera
D. Typhoid