A. Cyperus rotundus
B. Eichhornia creassipes
C. Parthenium hysterophorus
D. Chenopodium album
Related Mcqs:
- Which important greenhouse gas other than methane is being produced from the agricultural fields?
A. Arsine
B. SO2
C. NH3
D. N2O - Prolonged liberal irrigation of agricultural fields is likely to create the problem of:
A. Acidity
B. Metal toxicity
C. Aridity
D. Salinity - Norman Borlaug, the American agricultural scientist and plant pathologist developed the high yield strains that greatly increased crop yields. He laid the groundwork for the green revolution and was awarded the Nobel Prize for Peace in ________
A. 1970
B. 1972
C. 1974
D. 1976 - Besides dung, the weed that can be used in biogas production is:
A. Eichhornia crassipes
B. Solanum nigrum
C. Hydrilla
D. Parthenium hysterophorus
E. All of these - The approximate number of plant species, according to WCMC, that have become extinct in the last four centuries:
A. 834
B. 483
C. 533
D. 384 - Common combinations of the agroforestry system in Pakistan are: Trees species: Agricultural crops grown with trees:
A. Poplars: wheat / maize / turmeric / sugarcane / vegetables / fodder
B. Eucalypts: wheat/sunflower/tomatoes/potatoes/chilies
C. Simal: maize/sunflower/vegetables/fodder
D. Shisham: turmeric/wheat/maize/vegetables
E. All of the above - Mark the plant showing insecticidal properties:
A. Ocimum basilicum
B. Azadirachta indica
C. Both (a) & (b)
D. Dalbergia sissoo - Rhino has become a threated species on account of over exploitation for its:
A. Skin
B. Bones
C. Horn
D. Tusks - Survey conducted by WAPDA has revealed that 2.0 M ha of land have become severely waterlogged affecting a population of million:
A. 3.4
B. 4.4
C. 5.5
D. 6.5 - A three year old plant of poplar and Tamarix gallica consumes ______ liters and ____ liters of water per day, respectively under optimum supply conditions:
A. 45,60
B. 50,70
C. 60,80
D. None of these
