D:-250%
Correct Answer:-Question Cancelled
Question39:-Basic chromosome number of Solonum tuberosum
A:-10
B:-12
C:-6
D:-14
Correct Answer:- Option-B
Question40:-Concentric fruit craking is a disorder in tomato due to
A:-Over irrigation
B:-Delayed planting
C:-Genetic factors
D:-High temperature
Correct Answer:- Option-A
Question41:-Varieties developed by systematic breeding effort, once commercially estimated but no more grown
A:-land races
B:-obsolete varieties
C:-breeding lines
D:-wild forms
Correct Answer:- Option-B
Question42:-The gradual loss of variability from cultivated species, and their wild forms and wild relatives
A:-gene pool
B:-acclimatisation
:-genetic erosion
D:-gene bank
Correct Answer:- Option-C
Question43:-The scientist who proposed the eight main centres of origin of cultivated plants
‏۷۔۸‎
‎B:-Harlan
‎:-Darwin
‎D:-Mendel
‎Correct Answer:- Option-A
Question44:-A cross in which more than two parents are mated to produce a hybrid
A:-Complex cross
imple cross
C:-Intervarietal cross
D:-Interspecific cross
Correct Answer:- Option-A
Question45:-Inbreeding depression is more in
A:-self-pollinated crops
-often cross pollinated crops
C:-homogenous populations
D:-cross pollinated crops
Correct Answer:- Option-D
Question46:-In back cross breeding, the recurrent parent is otherwise known as
A:-recepient parent
B:-donor parent
C:-top cross parent
D:-male parent
Correct Answer:- Option-A
Question47:-Mutation frequency is higher in
A:-spontaneous mutations
duced mutations
C:-nonsence mutations
D:-vital mutations
Correct Answer:- Option-B
Question48:-D x T hybrids are produced for exploitation of heterosis in
A:-tapioca