A. Biochemical factors
B. Physiological factors
C. Morphological factors
D. all the above
Related Mcqs:
- Drought tolerance is associated with ____________________?
A. Deep root system
B. Small waxy and thick leaves
C. Sunken, small and less stomata
D. All of the above - Drought is measured in terms of________________?
A. Yield performance
B. Photosynthesis
C. Root length of seedings
D. All the above - Under drought conditions, there is an increase in__________________?
A. Pro line level
B. Ethylene level
C. Abscisic acid
D. All the above - The term vertical resistance and horizontal resistance were first used by________________________?
A. Van der plank (1963)
B. Karpechenko (1927)
C. Hull (1945)
D. Correns (1900) - In wheat, example of durable insect resistance includes resistance to___________________?
A. Green bugs
B. Stem saw fly
C. Hessian fly
D. All the above - Reciprocal recurrent selection is effective with___________________?
A. Incomplete
B. Complete dominance
C. Over dominance
D. All the above - The kaolininte is a layer silicate clay mineral, it is 1:1 type of mineral with___________________?
A. 3-15 meq/100g CEC
B. 40 meq/100g CEC
C. 50 meq/100g CEC
D. None of 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 - In Incern, resistance to spotted aphid is associated with__________________?
A. low sinigen in leaves
B. High saponin in leaves
C. High DIMBOA in leaves
D. High silicant content - Vertical resistance is also known as_________________?
A. Race specific
B. Oligogenic
C. Qualitative
D. All the above
