Which of the following is not a commonly used pesticide?

Related Mcqs:

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

   A. Pathogens
   B. Pheromones
   C. Insect repellant
   D. Insect hormone analogue

2. 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

3. 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

4. The most harmful pesticide is:

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

5. 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

6. Gases commonly referred to as ‘green house gases’ are:

   A. CH4, N2, CO2 and NH3
   B. CO2, O2, NO2 and NH3
   C. Chloro-fluoro-carbons, CO2, NH3 and N2
   D. CO2, chloro-fluoro-carbons, CH4 and NO2

7. The biological weathering commonly brought about by:

   A. Algae
   B. Bacteria
   C. Fungi
   D. Lichens

8. Commonly grown flowering shrubs and trees are:

   A. Delonix regia, Bojer
   B. Millettia ovalifolia, Kurz
   C. Erytherina glabrescens, Parker
   D. Cassia fistula, Linn
   E. All of the above

9. The plants commonly sown for crop rotation are :

   A. Cajanus and Dalbergia
   B. Cajanus and Aeschynomene
   C. Dalbergia and trigonella
   D. Trigonella and Trifolium

10. Which one of the following organisms is used as indicator of water quality?

    A. Beggiota
    B. Chlorella
    C. Azospirillium
    D. Escherichia