Pick wrong one out

Options

A. elephantiasis -Wuchereria
B. amoebic dysentery- Entamoeba histolytica
C. Infective stage of Plasmodium for human-sporozoite
D. Pneumonia -Salmonella typhi

Answer

To solve the question "Pick the wrong one out," we will analyze each statement regarding the diseases and their causative organisms.

### Step-by-Step Solution:

1. **Identify the first statement:**
- **Disease:** Elephantiasis
- **Causative Organism:** Filarial worm (specifically, Wuchereria bancrofti)
- **Analysis:** This statement is correct. Elephantiasis is indeed caused by Wuchereria bancrofti, leading to swelling of the limbs due to lymphatic blockage.

2. **Identify the second statement:**
- **Disease:** Amoebic dysentery
- **Causative Organism:** Entamoeba histolytica
- **Analysis:** This statement is also correct. Amoebic dysentery is caused by Entamoeba histolytica, and it is characterized by blood and mucus in stools.

3. **Identify the third statement:**
- **Disease:** Malaria (caused by Plasmodium)
- **Infective Stage:** Sporozoite
- **Analysis:** This statement is correct. The sporozoite is the infective stage of Plasmodium that enters the human bloodstream through the bite of a female Anopheles mosquito.

4. **Identify the fourth statement:**
- **Disease:** Pneumonia
- **Causative Organism:** Salmonella typhi
- **Analysis:** This statement is incorrect. Salmonella typhi is the causative agent of typhoid fever, not pneumonia. Pneumonia is typically caused by organisms such as Haemophilus influenzae or Streptococcus pneumoniae.

### Conclusion:
The fourth statement is the wrong one. Therefore, the answer to the question "Pick the wrong one out" is **option number four**.

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