Biological control component is central to advanced agriculture production. Which of the following is used as a third generation pesticide?

Related Mcqs:

1. When DDT was applied in an orchard as a pesticide, the fruit production decreased. This happened because:

   A. DDT is a growth retardant
   B. DDT disturbed hormonal balance essential for fruit setting
   C. DDT killed the pollinating insects along with the pests
   D. DDT inhibited flowering

2. Which of the following is not a commonly used pesticide?

   A. Aldrin
   B. Lindane
   C. Chlordane
   D. Chloremphenicol

3. At present ______ population is living in the watershed areas and are converting forest into agriculture land for food production:

   A. 50-80%
   B. 55-85%
   C. 60-90%
   D. 65-95%

4. Every pesticide develops its own failure as its repeated use leads to:

   A. The development of resistant pest varieties
   B. Simplification of food web
   C. Reduction in population of useful birds
   D. Increase in weed population

5. The major drawback of DDT as a pesticide is that:

   A. Its cost of production is high
   B. It is not rapidly degraded in nature
   C. Organisms at once developed resistance to it
   D. It is significantly less effective than other pesticides

6. The most harmful pesticide is:

   A. PAN
   B. 2,4,5-T
   C. 2,4-D
   D. DDT

7. Biological Oxygen Demand (BOD) is a measure of:

   A. Industrial wastes poured into water bodies
   B. Extent to which water is polluted with organic compounds
   C. Amount of carbon monoxide inseparably combined with haemoglobin
   D. Amount of oxygen needed by green plants during night

8. The maximum biological magnification of DDT through food web is seen in:

   A. Algae
   B. Bacteria
   C. Higher plants
   D. Man

9. Biological treatment of water pollution is done with the help of:

   A. Lichens
   B. Fungi
   C. Phytoplanktons
   D. None of the above

10. Agriculture is the major land-use in Pakistan. The cultivable area is _____ million ha. i.e. 36.7% of total area:

    A. 32.23
    B. 33.3
    C. 35.4
    D. None of these