The causal organism for earcockle disease of wheat is:
A) Meloidogyne spp.
B) Heterodera avenae
C) Anguina tritici
D) None of these
Taphrina causes the disease:
A) Chillies leaf curl
B) Tomato leaf curl
C) Peach leaf curl
D) Potato leaf curl
Tobacco mosaic infection entity was isolated in pure crystalline form of protein by:
A) Stanley
B) Beijerinck
C) Iwanowsky
D) Bawden
Transformation is a process of multiplication in:
A) Fungi
B) Bacteria
C) Bacter

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