A. 1893 AD
B. 1880 AD
C. 1793 AD
D. 1650 AD
Related Mcqs:
- Cotton ginning machine was invented by_______________?
A. William Black
B. Withey
C. Thomas Hough ten
D. Thomas Wilson - Gassypium herbaceum was originated in______________?
A. Ethipia and South Africa
B. Kenya and South Africa
C. Indonesia and Central America
D. South Mexico and Central America - The unproductive branches of cotton are called_________________?
A. Sympodial branches
B. Monopodial branches
C. Vegetative branches - The harmful influence of one living plant on another living plant by the secretion of a toxic substance is called________________?
A. Allergy
B. Allelopathy
C. Parasitism
D. Antagorusm - Plants which grow on dry region are____________________?
A. Xerophytes
B. Thermophytes
C. Hydrophytes
D. Haplophytes - Yield losses of rice crop due to weed infestation are___________________?
A. 10-20%
B. 5-15%
C. 20-50%
D. 20-60% - In Pakistan, the total length of canal system exceeds________________?
A. 59000 Km
B. 52000 Km
C. 58000 Km
D. 60000 Km - Solar energy emitted by sun reaches the earth surface absorbed and returned back in the form of___________________?
A. Infra blue radiation
B. Infra red radiation
C. X rays
D. None of the above - Which province the only source of income is livestock grazing in range lands_______________?
A. Punjab
B. NWFP
C. Balochistan
D. Sindhi - Who gave the formula for coefficient of velocity of germination ?
A. Kotowski (1926)
B. Germ (1949)
C. Deloucle & Baskin (1972)
D. Moore (1973)
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