Introduction:
Nitrogen is an essential nutrient required by plants for their growth and development. It is a major component of proteins, nucleic acids, and chlorophyll. Most plants obtain nitrogen from the soil in the form of nitrates or ammonium ions. However, some crops have the ability to fix atmospheric nitrogen with the help of symbiotic bacteria.

Explanation:
Among the given options, beans (option C) do not require nitrogenous fertilizer. Let's understand why.

Nitrogen Fixation:
Some plants have a symbiotic relationship with nitrogen-fixing bacteria, which are capable of converting atmospheric nitrogen into a usable form for plants. This process is called nitrogen fixation. These bacteria reside in root nodules of leguminous plants, such as beans, peas, and lentils. The bacteria take atmospheric nitrogen and convert it into ammonia, which is then used by the plants for their growth. Therefore, leguminous crops like beans do not require nitrogenous fertilizers as they can obtain nitrogen through biological fixation.

Other Crops:
1. Wheat (option A): Wheat is not capable of nitrogen fixation and relies on the availability of nitrogen in the soil. Therefore, wheat crops require nitrogenous fertilizers to meet their nitrogen requirements.
2. Millet (option B): Similar to wheat, millet crops do not have the ability to fix atmospheric nitrogen. Hence, they need nitrogenous fertilizers to fulfill their nitrogen needs.
3. Paddy (option D): Paddy, also known as rice, does not have the ability to fix nitrogen either. It requires nitrogenous fertilizers to meet its nitrogen demands.

Conclusion:
In conclusion, among the given options, beans do not require nitrogenous fertilizers as they have the ability to fix atmospheric nitrogen with the help of symbiotic bacteria present in their root nodules. On the other hand, crops like wheat, millet, and paddy rely on nitrogenous fertilizers to meet their nitrogen requirements.