| (i) Arteries are thick-walled and have narrow lumen as compared to veins |
| (ii) Angina is acute chest pain when the blood circulation to the brain is reduced |
| (iii) Persons with blood group AB can donate blood to any person with any blood group under ABO system |
| (iv) Calcium ions play a very important role in blood clotting |
| Which two of the above statements are correct? |
A) (i) and (iv)
B) (i) and (iv)
C) (ii) and (iii)
D) (iii) and (iv)
Correct Answer: A
Solution :
Not Available
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