Question

Which vitamin helps in blood coagulation?
a. Vitamin K
b. Vitamin C
c. Vitamin A
d. Vitamin D

Answer 1

Hint: Blood coagulation, also known as blood clotting, is a process of conversion of blood from its liquid form to a gel-like form. It helps in stopping blood loss during any injury, and follows repair of damaged blood vessels. Platelets play an important role in coagulation of blood.

Complete answer:
Vitamin K includes a group of vitamins that are fat-soluble. The most important types of vitamin K are K1 and K2. Vitamin K1 can be obtained from plants, mostly green vegetables, whereas Vitamin K2 can be obtained from substances such as cheese, eggs, meat, etc.
Vitamin K is required by the body to produce prothrombin which is a protein that acts as an important blood clotting factor. Prothrombin is also important in bone metabolism and regulating calcium levels in the blood.

Hence, the correct answer is option (A).

Additional information:
- Vitamin C helps in boosting the immune system and protects the body against deficiencies of the immune system. It also helps in protecting the body against cardio-vascular diseases, wrinkling of skin and eye related problems.
- Vitamin A is required by the body for proper growth and development, vision, maintaining proper immune functions, and in reproduction. It is also used as an antioxidant and sometimes, acts as a hormone by influencing genes and phenotype of a person.
- Vitamin D can be directly obtained from the sunlight and helps in absorption of calcium in the body. It also helps in reducing inflammation.

Note: Deficiency of Vitamin K can lead to increased time in blood clotting that can eventually cause excessive bleeding and haemorrhage. Its deficiency affects newborns the most, or the people with diseases like cystic fibrosis, ulcerative colitis, celiac disease, etc.