(I) Name any two helminths which are known to the pathogenic to human.
(ii) List any two symptoms of the diseases caused by any one of them.

Explanation

**Step-by-Step Solution:**

**(I)** To name two helminths that are known to be pathogenic to humans, we can consider:

1. **Ascaris lumbricoides** - This helminth causes a disease known as **Ascariasis**.
2. **Wuchereria bancrofti** - This helminth is responsible for a disease called **Filariasis**, which can lead to a condition known as **Elephantiasis**.

**(II)** Now, let's list two symptoms of the disease caused by one of these helminths. We will take **Ascariasis** caused by **Ascaris lumbricoides** as our example:
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