A. Deep root system
B. Small waxy and thick leaves
C. Sunken, small and less stomata
D. All of the above
Plant Breeding and Genetics
Drought resistance is associated with……………….?
A. Biochemical factors
B. Physiological factors
C. Morphological factors
D. all the above
In barley, resistance to cereal leaf beetle is associated with……………..?
A. High aspartic acid
B. Waxiness of leaves
C. High silica content
D. High benzol alcohol
Disease and insect resistance is governed by…………….?
A. Plasma genes
B. Polygenes
C. Oligogenes
D. All the above
In rice, brown plant hopper has no preference for……………….?
A. Purple stigma
B. Low aspergine
C. Red pericarp
D. All the above
Vertical resistance is also known as……………..?
A. Race specific
B. Oligogenic
C. Qualitative
D. All the above
Maximum mutants varieties are evolved in……………..?
A. Rice
B. Wheat
C. Barley
D. Maize
Mutation was first discovered by…………….?
A. deVries (1900)
B. Morgan (1910)
C. Stadler (1928)
D. Wright (1791)
A gene which exhibits higher mutation rate than others is referred as……………….?
A. Mutator gene
B. Antimutalor gene
C. Mutable gene
D. Hot spot
Blackeselee reported the first case of monoploid in………………?
A. Datura
B. Rye
C. Brassica
D. Oat