Fill in the following blanks with suitable words :
The main excretory product in human beings is …...........

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the main excretory product in human beings. Excretory products are waste substances that are eliminated from the body.

2. **Identifying Excretory Products**: There are several excretory products that animals produce, including ammonia, urea, and uric acid. Each type of animal has a different primary excretory product based on their physiology.

3. **Focusing on Humans**: In humans, the primary nitrogenous waste is urea. This is because humans metabolize proteins, which results in the formation of urea as a waste product.

4. **Conclusion**: Therefore, the main excretory product in human beings is **urea**.

**Final Answer**: The main excretory product in human beings is **urea**.

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