Biology
Assertion (A) An average adult have about 5-6 litres of blood by volume in his body.
Reason (R) The main functions of the blood in our body are transportation and protection.
- Both A and R are true
- Both A and R are false
- A is true and R is false
- A is false and R is true
Related Questions
The first heart sound (Lubb) is produced due to
- closure of tricuspid and bicuspid valves
- closure of aortic and pulmonary valves
- rushing of blood through valves producing turbulence
- entry of blood into auricles
The accidental discharges of petroleum in oceans or estuaries are
- industrial waste
- oil spills
- oil waste
- liquid spills
Main reason for sharp rise in world human population in the recent past
- Poor health care
- Improved nutrition
- More deaths
- Small scale immunisation
In human females, 23rd pair of chromosome is
- XY
- XX
- Both XX and XY
- Neither XX or XY