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UPSC-CMS 2020 — Biochemistry

Q: Major source of vitamin K1 is:

Fresh dark green vegetables. ***Fresh dark green vegetables*** - **Phylloquinone (Vitamin K1)** is predominantly found in plants, particularly in **green leafy vegetables** such as kale, spinach, collard greens, and broccoli. - These vegetables are essential for providing the dietary form of vitamin K, which plays a crucial role in **blood clotting** and **bone metabolism**. *Citrus fruits* - Citrus fruits are well-known for being rich in **Vitamin C**, an essential antioxidant. - They are not a significant source of **Vitamin K1**. *Exposure of body to sunlight* - Exposure to sunlight is the primary natural mechanism for the body to synthesize **Vitamin D**. - Sunlight exposure does not contribute to the production or absorption of **Vitamin K**. *Foods rich in polyunsaturated fatty acids* - Foods rich in polyunsaturated fatty acids (PUFAs) include various vegetable oils, nuts, and fatty fish. - While important for overall health, PUFAs are not primary sources of **Vitamin K1**, although some oils may contain small amounts. [Practice more Biochemistry PYQs on OnCourse]

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Major source of vitamin K1 is:

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