All plants require nitrogen for:

1. The essential element that plants need to survive is nitrogen. 
2. In healthy soil, the nitrogen is fixed by soil microbes, particularly bacteria, through the decomposition of dead organic matter. 
3. Plants use this nitrogen for growth as well as the production of fruits and vegetables. Plants utilize nitrogen by turning it into an amino acid. 
4. The building blocks of protein are amino acids. The growth and development of the plant tissues depend on these proteins. 
5. Therefore, without nitrogen, plants would not live and would perish. Nitrogen is a significant component of chlorophyll, the pigment used in photosynthetic processes to store sunlight. 
6. There is no root formation, but there is a rise in biomass in the stalk, leaf stem regions, and other areas of the plant.

Hence, option D is the correct answer.