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.Management Sciences
Category: Agronomy
The transport of a substance across a biological membrane against a concentration gradient is called___________________?
A. Passive transport
B. Active transport
C. Absorption
D. Dissolution
Effects of allelopathic compound in the life cycle of plants cause inhibition of________________?
A. Seed deterioration
B. seed germination
C. Seed swelling
D. non of these
Who gave the formula for mean germination time?
A. Nicolls &Heydecker (1968)
B. Kotowski (1962)
C. Baskin (1972)
D. Maguire (1962)
Gassypium and Hirsutum was developed from a cross between________________?
A. G.arbarieum and G. rainmundii
B. G.arbarieum and G.thurberii
C. G.arbarieum and G.barbadense
D. G.arbarieum and G.herbaceum
Low soil pH is the indication of_______________?
A. High Mg and Ca
B. High N and S
C. Low N and Ca
D. Moderate Mg and Ca
The climates of sindh province comes under__________________?
A. tropical
B. Temperature
C. Sub tropical
D. all
Hybrid seeds are developed because they_________________?
A. Produce better crop
B. Provide greater vigour
C. Are more uniform
D. All the above
Who described. the use of letrazolium for assessing, seed quality and the basis of topographical patterns___________________?
A. Moore (1973)
B. Burries etc (1969)
C. Maguare (1962)
D. Kotowski (1926)
The movement of water in soil profile is.known as__________________?
A. Diffusion
B. Percolation
C. Absorption
D. All the above
Gassypium barbadense was originated in__________________?
A. Central and North America
B. Central and South America
C. Central and South Asia
D. North Mexico and North America
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