Question

Match the vitamins in List I with their sources in List II

Choose the correct answer from the options given below:

• A. A-III, B-I, C-IV, D-II
• B. A-II, B-III, C-IV, D-I
• C. A-IV, B-I, C-II, D-III
• D. A-IV, B-II, C-I, D-III

Hint:

An excellent rule of thumb for biochemistry questions involving vitamins is remembering specific exclusive facts: Vitamin $\text{B}_{12}$ is never inherently found in plant sources. Hence, it must pair with animal-derived options like meat (B-I). Matching this immediately rules out options (1), (2), and (4) in this question, leading you directly to the correct option (3) without any ambiguity!

Answer 1

The Correct Option is C

Concept: Vitamins are essential biomolecules that human bodies cannot synthesize in sufficient quantities, making it crucial to acquire them via dietary intakes. They are categorized based on solubility into fat-soluble vitamins (A, D, E, K) and water-soluble vitamins (B-complex, C). Each vitamin is enriched in specific natural dietary sources.

Step 1: Identifying the source for Vitamin A.
Vitamin A (Retinol) is a fat-soluble vitamin critical for maintaining healthy vision, immune functions, and cellular health. Carotene is a well-known precursor of Vitamin A found in abundance in deep orange and yellow plant sources. Among the provided options in List II,

carrots are exceptionally rich in $\beta$-carotene. Therefore,

A matches with IV.

Step 2: Identifying the source for Vitamin $\text{B}_{12}$.
Vitamin $\text{B}_{12}$ (Cyanocobalamin) is a water-soluble vitamin vital for red blood cell formation, neurological health, and DNA synthesis. Crucially, plants cannot synthesize Vitamin $\text{B}_{12}$; it is produced exclusively by bacteria and is found naturally almost entirely in animal-derived foods such as

meat, fish, eggs, and dairy products. Therefore,

B matches with I.

Step 3: Identifying the source for Vitamin E.
Vitamin E (Tocopherol) functions as a potent fat-soluble antioxidant that protects cellular membranes from oxidative damage caused by free radicals. The most dense dietary sources of Vitamin E are plant-based oils, seeds, and nuts. Among the options given,

sunflower oil is an established, major source of Vitamin E. Therefore,

C matches with II.

Step 4: Identifying the source for Vitamin K.
Vitamin K (Phylloquinone/Menaquinone) plays an indispensable role in the coagulation cascade by aiding the synthesis of blood clotting factors (such as prothrombin), as well as regulating bone metabolism. It is prominently biosynthesized in high amounts within photosynthetic tissues, making

green leafy vegetables (like spinach, kale, and broccoli) its foremost source. Therefore,

D matches with III.

Conclusion of Matching: Combining all the mapped pairs together:

• Vitamin A $\rightarrow$ carrots (IV)

• Vitamin $\text{B}_{12}$ $\rightarrow$ meat (I)

• Vitamin E $\rightarrow$ sunflower oil (II)

• Vitamin K $\rightarrow$ green leafy vegetables (III)
This corresponds exactly to the sequence: A-IV, B-I, C-II, D-III, which is option (3).