Question 34 Which of the following insecticides is formed by Diels Alder reactio

Question

Question 34

Which of the following insecticides is formed by Diels Alder reaction of hexachlorocyclopentadiene and how do you know that Briefly explain why there is such a vast number of insecticides ... 20 words can easily be enough. Pyrethrin insecticides are said to be "natural" type insecticides. Why? What structural feature is found in synthetic pyrethroids, like permethrin ..? What is the class of pesticides that is causing some much trouble for bees? How did Cousteau and friends probably get exposed to PCBs? How did Gavin get exposed, probably, to PBDEs? How do Orcas get exposed to PCBs ad PBDEs? Draw an example of a PCB congener and an example of a PBDE congener.

Explanation / Answer

34.) neonicotinoids is the class of pesticides that is causing some much trouble for bees. The neonicotinoids are a new class of pesticides that have an effect on the bee's central nervous system. It is the most widely used insecticide in US, which is used as a coating in agricultural seeds and in pot plants. It spreads to the whole plant including pollen and nectar that the bees eat. Sscientific studies indicate that, bees that feed on neonicotinoid contaminated pollen and nectar, forage less and produces fewer offspring. The other insecticide, coumaphos is a compound that is used in honey bee hive to kill a parasite called, Varroa mite that commonly attacks honey bees.

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