Question

Chemistry of photosynthetic pigments was first studied by
(a)Willstatter and Stoll
(b)Pelletier and Caventou
(c)Priestly
(d)Engelmann

Answer 1

They were the scientists well known for their work in the introduction of the chlorophyll pigment. One of them was the German organic chemist who won a Nobel Prize for Chemistry in 1915.

Complete answer:
The chemistry of photosynthetic pigments was first studied by Willstatter and Stoll in 1912. They were the ones to discover the structure of the chlorophyll as a tadpole-like. The head of the pigment was made of porphyrin and the tail was made up of phytol which was a long chain of alcohol.

Additional Information: -Chlorophyll molecules embedded within the thylakoid membrane absorb light energy. These molecules are the foremost important pigments for absorbing the sunshine energy utilized in photosynthesis.
-Chlorophyll is found in all photosynthetic organisms, including green plants, cyanobacteria, and algae. It absorbs energy from light; this energy is then wont to convert carbon dioxide to carbohydrates.
-A chlorophyll molecule features a hydrophobic "tail" that embeds the molecule into the thylakoid membrane. The "head" of a chlorophyll molecule may be a ring called a porphyrin. The porphyrin ring of chlorophyll, which features a magnesium atom at its center, is a part of a chlorophyll molecule that absorbs light energy.
-The chlorophyll molecule consists of a central magnesium atom surrounded by a nitrogen-containing structure called a porphyrin ring; attached to the ring may be a long carbon-hydrogen side chain, referred to as a phytol chain. Variations are due to the minor modifications of certain side groups.
So, the correct answer is ‘Willstatter and Stoll’.

Note: Porphyrins are aromatic, highly conjugated heterocycles, with a score of 4 pyrrole rings coupled through four methylene units, that contain 11 conjugated double bonds, resulting in light absorption within the hellfire of the color spectrum. Beyond plants and animals, there are porphyrins almost everywhere within the world.