Question

Which of the following statements are correct about functions of essential plant nutrients?
(A) Nitrogen is an important component of nucleic acids.
(B) Phosphorus is essential to the formation of enzymes.
(C) Sulphur is part of some amino acids and coenzymes.
(D) Manganese is essential for pollen germination.
Choose the correct answer from the options given below:

• (A) and (D) only
• (A) and (C) only
• (B) and (C) only
• (A) and (C) only

Answer 1

The Correct Option is D

The correct answer is (4) (B), (C), and (D) only.

Let’s review each statement:

(A) Nitrogen is not a component of nucleic acids: This statement is incorrect. Nitrogen is indeed a component of nucleic acids (DNA and RNA), as it is part of the nitrogenous bases (adenine, guanine, cytosine, thymine, and uracil). Therefore, (A) is incorrect.

(B) Potassium plays an important role in the activation of enzymes: This statement is correct. Potassium is essential for activating various enzymes, particularly those involved in protein synthesis and carbohydrate metabolism.

(C) Sulfur is part of some amino acids and coenzymes: This statement is correct. Sulfur is a component of amino acids like cysteine and methionine, and it is also present in coenzymes such as coenzyme A.

(D) Phosphorus deficiency results in terminal bud necrosis: This statement is correct. Phosphorus deficiency can lead to stunted growth, poor root development, and symptoms such as terminal bud necrosis (death of the growing tips).

Thus, the correct answer is (4) (B), (C), and (D) only.

Answer 2

- (A) False - Nitrogen is a component of nucleic acids.
- (B) True - Potassium activates enzymes.
- (C) True - Sulfur is part of amino acids like cysteine and coenzymes.
- (D) True - Phosphorus deficiency can lead to terminal bud necrosis.