Plant deficient in elemental nitrogen, often show its effect on the biosynthesis of:

Options

A. Proteins
B. Nucleic acids
C. Vitamins
D. More than one option is correct

Answer

To solve the question regarding the effects of nitrogen deficiency in plants on biosynthesis, we can break it down into the following steps:

### Step 1: Understand the Role of Nitrogen in Plants
Nitrogen is an essential element for plants, as it is a key component of various biomolecules. It is crucial for the synthesis of amino acids, nucleic acids, and certain vitamins.

### Step 2: Analyze the Options
- **A. Proteins**: Proteins are made up of amino acids, which contain nitrogen. Therefore, a deficiency in nitrogen will directly affect protein synthesis.
- **B. Nucleic Acids**: Nucleic acids (DNA and RNA) are composed of nucleotides, which include nitrogenous bases (adenine, guanine, cytosine, thymine, and uracil). A lack of nitrogen will hinder the production of these bases, thus affecting nucleic acid synthesis.
- **C. Vitamins**: Certain vitamins, such as vitamin B6, also require nitrogen for their biosynthesis. Thus, nitrogen deficiency can impact vitamin synthesis as well.
- **D. More than one option is correct**: Since nitrogen is essential for the biosynthesis of proteins, nucleic acids, and some vitamins, this option suggests that multiple processes are affected.

### Step 3: Conclusion
Given that nitrogen is vital for the synthesis of proteins, nucleic acids, and certain vitamins, the correct answer is **D. More than one option is correct**.

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