MCQ practice · SSC Biology Board questions · Chapter 6: Transport in Organisms
Sharif is AB+, Mithun is AB- and Raihan is O-. Mithun:
- i. can give blood to Sharif
- ii. can take blood from Sharif
- iii. can take blood from Raihan
Think it through first, then pick an option.
- a i and ii
- b i and iii
- c ii and iii
- d i, ii and iii
Answer and explanation
Correct answer: b i and iii
AB- can give to AB+ (i) and take from O- (iii); it cannot take from AB+ (ii false), since positive blood cannot go to a negative person.
Why the other options are wrong
- a i and ii: ii is false: AB+ blood carries the Rh antigen, which is risky for AB-.
- c ii and iii: ii is false, so this pair fails. The right choice is: i and iii.
- d i, ii and iii: Taking all three includes the false statement ii.
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