Nitrogen waste product of entamoeba is

Options

A. Ammonia
B. Urea
C. Uric acid
D. None of the above.

Answer

**Step-by-Step Solution:**

1. **Identify the Organism:** The question asks about the nitrogenous waste product of Entamoeba. Entamoeba is a genus of unicellular organisms that belong to the kingdom Protista, specifically the group of protozoans.

2. **Understand the Classification:** Entamoeba is classified under the group Sarcodena or Rhizopoda, which are characterized by their locomotory organelles called pseudopodia (false feet). This helps in their movement and feeding.

3. **Recognize the Species:** The species of interest is Entamoeba histolytica, which is known to be a monogenetic parasite causing amoebiasis (amoebic dysentery).

4. **Determine the Nitrogenous Waste:** In unicellular organisms like Entamoeba, the primary nitrogenous waste product is ammonia. This is because ammonia can easily diffuse out of the cell into the surrounding water.

5. **Eliminate Other Options:** Urea and uric acid are not the excretory products of Entamoeba. While many organisms excrete urea or uric acid, Entamoeba directly excretes ammonia due to its aquatic environment, where ammonia can be readily diluted.

6. **Conclude the Answer:** Therefore, the nitrogenous waste product of Entamoeba is ammonia.

**Final Answer:** The nitrogen waste product of Entamoeba is ammonia.

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