Nitrogen is NOT an essential constituents of:   1 point(a) Chlorophyll(b) RNA(c) DNA(d) Carbohydrate

To determine which option does not contain nitrogen as an essential constituent, let's analyze each option:

1. Chlorophyll: Chlorophyll is a green pigment found in plants, essential for photosynthesis. It is composed of a porphyrin ring that contains nitrogen.

2. RNA: Ribonucleic acid (RNA) is a crucial molecule in the coding, decoding, regulation, and expression of genes. RNA contains nitrogenous bases, which include adenine, cytosine, guanine, and uracil.

3. DNA: Deoxyribonucleic acid (DNA) is the molecule that carries genetic instructions. Like RNA, it contains nitrogenous bases, specifically adenine, cytosine, guanine, and thymine.

4. Carbohydrate: Carbohydrates are organic compounds made up of carbon, hydrogen, and oxygen. They do not contain nitrogen as part of their primary structure.

Based on this analysis, the correct answer is:

Final Answer

(d) Carbohydrate