Elephantiasis is caused by a member of

Options

A. Aschelminthes
B. Platyhelminthes
C. Annelida
D. Arthropoda

Answer

**Step-by-Step Solution:**

1. **Identify the Condition**: The question asks about the cause of Elephantiasis, a condition characterized by extreme swelling, often in the legs and genitals.

2. **Determine the Causative Agent**: The causative agent of Elephantiasis is identified as Wuchereria bancrofti, which is a type of parasitic worm.

3. **Classify the Organism**: Wuchereria bancrofti is classified as a filarial worm, which belongs to the phylum Nematoda (also known as Aschelminthes).

4. **Understand the Characteristics**: These worms are endoparasites and exhibit sexual dimorphism, meaning that male and female worms have different physical characteristics.

5. **Explain the Mechanism**: Wuchereria bancrofti resides in the lymphatic system and blocks the flow of lymph fluid, leading to the swelling associated with Elephantiasis.

6. **Select the Correct Option**: Based on the classification of Wuchereria bancrofti, the correct answer to the question is that Elephantiasis is caused by a member of Aschelminthes (Nematoda).

7. **Conclude**: Therefore, the answer is option number one: Aschelminthes.

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