In humans, elephantiasis is caused by

Elephantiasis (Filariasis) in man is caused by

What causes Ascariasis? Mention its causative agent, symptoms, and mode of transmission.

An individual bathing in an infected pool or coming in contact with contaminated water is liable to be infected with .................. The .................... larva stick to the surface of the skin of swimmer or bather,and penetrate the skin.

Elephantiasis (filariasis) is caused by which worm?

While examining a patient, the following symptoms are observed:
$(i)$ Chronic inflammation in the lymphatic vessels of the lower limbs.
$(ii)$ Genital organs are also affected.
What is the disease diagnosed by the doctor?