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Question

Which vitamin helps in blood coagulation?

  1. Vitamin A
  2. Vitamin D
  3. Vitamin C
  4. Vitamin K

A
Vitamin C
B
Vitamin A
C
Vitamin K
D
Vitamin D
Solution
Verified by Toppr

Vitamin K catalyzes synthesis of prothrombin and is also required for synthesis of other blood clotting factor. It's deficiency causes hemorrhagic disease, specifically in new born. This makes option A correct.
Vitamin C is involved in synthesis of collagen, absorption and transport of iron and is also involved in folacin metabolism. Its deficiency causes scurvy, which is characterized by haemorrhages and bleeding gums. This makes option B incorrect.
Vitamin A is involved in maintenance of epithelial cells, synthesis of rhodopsin (pigment responsible for dim light vision) and is also required for healing, growth, and normal immune function. Its deficiency causes xeropthalmia (night blindness) which makes option C incorrect.
Vitamin D is involved in bone formation and its deficiency causes rickets, which is characterized by enlargement of epiphysis, cranial bossing and bowed legs. This makes option D incorrect.

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