Question

Which of the following Vitamin is necessary for the synthesis of NADH2
A.Vitamin $B_2$
B.Vitamin $B_5$
C.Vitamin C
D.Vitamin K

Answer 1

Hint: Metabolism in both plants and animals are dependent on various vitamins and plants can synthesize their vitamins by themselves.

Complete answer:
-There are different vitamins each having a specific function in plants and when their amount is not sufficient it causes a deficiency of vitamins that leads to various diseases in plants and can also affect the entire metabolism of the plant.
-Vitamins are classified as water-soluble and fat-soluble vitamins.
1.Water soluble Vitamins are Vitamin B and C
2.Fat soluble Vitamins are Vitamin A, D, E, and K.

Option A: Vitamin $B_2$ is also known as Riboflavin which is one of the important vitamins in the plant which makes the plant resistant to drought conditions, therefore, this is the incorrect option.

Option B: Vitamin $B_5$ is also known as pantothenate. This vitamin is involved in $NADH_2$ synthesis and also synthesizes different proteins and cofactors required for various reactions taking place in plants and it is also involved in the metabolism of the plant. therefore, this is the correct option.

Option C: Vitamin C is also known as L-Ascorbic acid and is involved in the regulation of photosynthesis in plants and is furthermore involved in cell growth. therefore, this is the incorrect option.

Option D: Vitamin K acts as an electron acceptor in photosynthesis and also acts as a cofactor in carboxylation reactions taking place in plants. therefore, this is the incorrect option.

Hence, the correct answer is option (B)

Note: Vitamin $B_5$ is very important for the metabolism of fatty acids and carbohydrates and this vitamin is made up of pantoic acid and beta-alanine and is very important for the production of coenzyme A also known as CoA which is an important enzyme required in the Krebs cycle and also helps pyruvate to enter as acetyl coenzyme A in the tricarboxylic acid cycle.