MCQ practice · SSC Biology Board questions · Chapter 6: Transport in Organisms
The Rhesus factor is a kind of:
Think it through first, then pick an option.
- a Antigen
- b Pigment
- c Antibody
- d Clotting factor
Answer and explanation
Correct answer: a Antigen
The Rhesus (Rh) factor is a kind of antigen.
Why the other options are wrong
- b Pigment: The pigment is haemoglobin. The right choice is: Antigen.
- c Antibody: Antibodies sit in plasma; Rh is an antigen.
- d Clotting factor: A clotting factor is a clotting aid; Rh is not one.
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