Question

Green leafy vegetables are a rich source of :
A) Sodium
B) Iron
C) Magnesium
D) None of the above.

Answer 1

Minerals and vitamins are examples of essential elements which are required by the body. The source of these minerals and vitamins are green leafy vegetables, fruits, etc.

Complete answer:
Green leafy vegetables are an essential part of a proper healthy diet. According to recent studies, consumption of leafy vegetables prevents certain diseases. They deliver many essential nutrients like vitamin A, vitamin C, vitamin K, fibers, iron, etc.
So now let us analyze each of the above-mentioned options:

Option A: Sodium - Green leafy vegetables are not a source of sodium. And sodium is just a beneficial element. Therefore, this is the incorrect option.
Option B: Iron - Green leafy vegetables are a rich source of iron. Iron plays a vital role in metabolism which is also a constituent of several proteins involved in the transfer of electrons like ferredoxin and cytochrome. Therefore, this is the correct option.
Option C: Magnesium - Even though leafy vegetables may contain magnesium, we cannot say it is a rich source. Therefore, this is the incorrect option.
Option D: None of the above. As we have found the right option, this is the incorrect option.

Thus, the correct answer is option (B) Iron.

Note: The role of certain nutrients are :
(i) Potassium - Involved in protein synthesis, maintenance of turbidity of cells, transmission of electric impulse, opening and closing of stoma, etc.
(ii) Magnesium - Constituent of several enzymes, a part of the ring structure of chlorophyll.
(iii) Iron - It activates the enzyme catalase.