Question

What is the metallic element present in chlorophyll?
${\text{A}}{\text{.}}$ Hg
${\text{B}}{\text{.}}$ Fe
${\text{C}}{\text{.}}$ Mg
${\text{D}}{\text{.}}$ Ni

Answer 1

Hint: Here, we will proceed by discussing the molecules of chlorophyll. Then, we will mention the elements which the chlorophyll molecule consists of. Finally, we will observe the central metallic element.

Complete answer:
In plants, algae , and cyanobacteria, chlorophyll is a green photosynthetic pigment.
Green substance in crops that absorbs light energy from the sun, which is then used in the photosynthesis process to transform carbon dioxide and water into sugars Chlorophyll is essential for photosynthesis, which helps plants get energy from light.
-Chlorophyll molecules are specifically arranged in and around pigment-protein complexes, called photosystems, embedded in chloroplast thylakoid membranes.
-Chlorophyll is any member of the most important class of pigments involved in photosynthesis which is defined as the process by which light energy is converted to chemical energy through the synthesis of organic compounds. Chlorophyll is found in virtually all photosynthetic organisms, including green plants, cyanobacteria, and algae.It absorbs light energy, then this energy is used to convert carbon dioxide into carbohydrates.
-The chlorophyll molecule consists of a central magnesium atom which is surrounded by a structure containing nitrogen called a porphyrin ring and attached to the ring is a long side chain of carbon hydrogen, known as a phytol chain.
-Variations are due to minor modifications of certain side groups. Chlorophyll is remarkably similar in structure to haemoglobin which is defined as the oxygen carrying pigment found in the red blood cells of mammals and other vertebrates.
Therefore, the metallic element present in chlorophyll is magnesium (Mg).
Hence, option C is correct.

Note: The most important role of magnesium is as the central atom in the chlorophyll molecule. Magnesium is mobile within the plant so signs of deficiency first occur in older leaves. The symptoms are represented as yellow leaves with green veins. It also helps to activate many plant enzymes required for development, and contributes to the synthesis of proteins.