The terms vertical resistance and horizontal resistance were coined by:
A) Robinson
B) Van der Plank
C) Russell
D) Nelson
Vertical resistance is also known as:
A) Major gene resistance
B) Race specific resistance
C) Oligogenic resistance
D) Qualitative resistance
E) ALL
Horizontal resistance is also referred to as:
A) Minor gene resistance
B) Polygenic resistance
C) Quantitative resistance
D) General resistance
Gene for gene hypothesis was proposed by:
A) Nelson
B) Flor
C) Van der Plank
D) Robinson
Concept of gene for gene hypothesis was developed in:
A) Pearl millet
B) Linseed
C) Sorghum
D) Garden pea
In wheat, stem sawfly has non-preference for:
A) Small leaves
B) Thick leaves
C) Solid stem
D) Hairiness of leaves
In rice, brown plant hopper has non-preference for:
A) Low aspergine
B) Purple stigma
C) High tannin content
D) All of the above
In cotton, jassids have non-preference for:
A) Smoothness of leaves
B) Hairiness of leaves
C) High DIMBOA in leaves
D) High tannin content
In maize, resistance to European corn borer is associated with:
A) Waxiness of leaves
B) High DIMBOA in leaves
C) High benzyl alcohol
D) High tannin content
In rice, resistance to stem borer is associated with:
A) High tannin in stem
B) High benzyl alcohol
C) Waxiness of leaves
D) High silica content in stem

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