Question

Nitrogen element facilitates which functions in plants
A. Chlorophyll synthesis
B. Protein synthesis
C. Nucleic acid synthesis
D. Pollen germination
Choose the correct answer from the options given below:

• A. A and B only
• B. B and C only
• C. A, B and C only
• D. B and D only

Hint:

Nitrogen: Structural component of Proteins, Nucleic acids (DNA/RNA), and Chlorophyll. Boron: Facilitates pollen tube germination and sugar translocation.

Answer 1

The Correct Option is C

Step 1: Understanding the Concept:
Nitrogen is a primary essential macronutrient functioning as a constituent of amino acids, proteins, nucleotides, nucleic acids, and the porphyrin ring of chlorophyll.

Step 2: Detailed Explanation:
Evaluating the physiological roles of nitrogen in plants:
1. Chlorophyll Synthesis (A): Nitrogen is an essential structural constituent of the tetrapyrrole porphyrin ring surrounding the central magnesium atom in chlorophyll.
2. Protein Synthesis (B): Nitrogen is the core element of all amino acids forming polypeptides and enzymes.
3. Nucleic Acid Synthesis (C): Nitrogenous purine and pyrimidine bases build DNA and RNA.
4. Pollen Germination (D): Facilitated primarily by Boron ($B$) and Calcium ($Ca$).
Thus, functions A, B, and C are directly facilitated by nitrogen.

Step 3: Final Answer:
Hence, the correct answer is A, B and C only, corresponding to option (C).