Question

Example of Root knot Nematode is:

• A. Meloidogyne
• B. Ascaris
• C. Trichinella
• D. Taenia

Hint:

Root-knot nematodes induce giant cell formation in roots, creating permanent feeding sites.

Answer 1

The Correct Option is A

Meloidogyne spp.:
Cause characteristic root galls
Major agricultural pests worldwide
Other nematodes:
Ascaris: Intestinal parasite
Trichinella: Muscle parasite
Taenia: Cestode (tapeworm)

Answer 2

Elimination by host range:
Ascaris is an intestinal roundworm parasite of humans and animals, Trichinella is a muscle-invading roundworm parasite of mammals, and Taenia is not even a nematode but a cestode (tapeworm), none of these attacks plant roots.
Meloidogyne is the only genus among the four that is plant-parasitic, its second-stage juveniles invade root tissue and induce giant-cell formation, producing the swollen root galls that give this group its common name, "root-knot nematode."
By host-range elimination, the answer is Meloidogyne.