Question: Which is a virus vector (transmits) nematode?
Options:
Heterodera avenae
Anguina tritici
Xiphinema index
Meloidogyne spp.
✅Explanation:
Xiphinema index is a species of dagger nematode known to transmit plant viruses, specifically the Grapevine fanleaf virus (GFLV). Dagger nematodes have long, needle-like stylets (mouthparts) they use to pierce plant cells and feed on their contents. During feeding, they can acquire virus particles from infected plants and transmit them to healthy plants.
Xiphinema index is a species of dagger nematode known to transmit plant viruses, specifically the Grapevine fanleaf virus (GFLV). Dagger nematodes have long, needle-like stylets (mouthparts) they use to pierce plant cells and feed on their contents. During feeding, they can acquire virus particles from infected plants and transmit them to healthy plants.