Question

Deficiency of $\mathrm{Vitamin}\mathrm{K}$ causes:

• A. Cheilosis
• B. Increase in blood clotting time
• C. Increase in the fragility of RBCs
• D. Decrease in blood clotting time

Answer 1

The correct option is B

Increase in blood clotting time

Explanation for the correct option:

B) Increase in blood clotting time

1. $\mathrm{Vitamin}\mathrm{K}$ is used for bone strength, and clotting of blood at a specific time, so that, there is less loss of blood.
2. Due to its deficiency, the bones get weaker and blood clotting time will be increased.

Explanation for the incorrect option:

A) Cheilosis

1. Riboflavin i.e., $\mathrm{Vitamin}\mathrm{B}2$ helps to break down the proteins, fats and carbohydrates and helps in the production of Red Blood Cells.
2. Deficiency in this vitamin results in some skin disorders like Cheilosis.

C) Increase in the fragility of RBCs

1. $\mathrm{Vitamin}\mathrm{C}$ helps to protect and maintain the Skin, Blood vessels, Bones and Cartilage healthy and also helps in healing the wounds.
2. Lack of this vitamin results in an increase in the fragility of the Red Blood Cells.

D) Decrease in blood clotting time

1. A protein called $\mathrm{Prothrombin}$ which is produced from the liver helps in clotting the blood at an appropriate time.
2. Excess release of this protein results in the excessive clotting of blood.

Hence, option B is correct. The deficiency of $\mathrm{Vitamin}\mathrm{K}$ results in an increase in the blood clotting time.