Question

Filarial worm is:
A. Oviparous
B. Viviparous
C. Ovoviviparous
D. Parthenogenetic

Answer 1

Hint: Filarial worm, any of a group of parasitic worms belonging to the family Filariidae (phylum Nematoda) that requires two hosts to complete their life cycle: an arthropod (intermediate host) and a vertebrate (primary host). The larval stage takes place inside a biting insect's body. In the body of an animal bitten by the insect, the mature (reproductive) phase takes place.

Complete answer:
Option: A – Oviparous organisms lay eggs which hatch into young ones. However, a filarial worm gives birth to young ones which hatch from the eggs in the adult body.
So, Option A is not correct.
Option: B – Viviparous organisms give birth to young ones. Filarial worms also give birth to young ones but on careful examination by scientists it was found that a filarial worm produces eggs which develop inside the body of the worm.
So, Option B is not correct.
Option: C - Ovoviviparity refers to the process of creating children using eggs that hatch within the parent's body. This is the case with filarial worms.
So, Option C is correct.
Option: D – Parthenogenetic development means development of egg without fertilization and such a mode of reproduction is not evident in filarial worms.
So, Option D is not correct.

Therefore, Option C. Ovoviviparous is the correct answer

Additional information:
Filariasis is an infectious tropical illness caused by one of numerous parasitic roundworms that look like threads. Wuchereria bancrofti and Brugia malayi are the two worm species most commonly linked with this illness.

Note:
In filarial worms, copulation occurs in the lymphatic system of humans. When male and female worms are present in the same lymph gland, they copulate. Female worms are ovoviviparous, meaning they create eggs that hatch within the female's body without consuming it. Microfilariae, which are tiny juvenile larvae, are discharged into the lymph.