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Bacillus thuringiensis is used to control-
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Bacillus thuringiensis (or Bt) is a Gram-positive, soil-dwelling bacterium, commonly used as a biological pesticide. Many crystal-producing Bt strains, though, do not have insecticidal properties. The subspecies israelensis is commonly used for control of mosquitoes and of fungus gnats.
Which of the most important source of food and fodder?
In 1984 Bhopal gas tragedy was caused due to leakage of -
Which of the following plant is used as green manure ?
Which of these is a new crop ?
Which of the following plants is most commonly used as green manure in India?
Organo phosphates inhibit cholinesterase which of the following is a cholinesterase inhibitor -
Pesticides are chemicals that are used to destroy pests and thus increase crop productivity. They are often persistent, induce resistance and ecological imbalance. Malathion is an organophosphate pesticide which affects the nervous system. It inhibits the action of acetylcholinesterase enzyme which leads to accumulation of acetylcholine at the synapse.
So, the correct answer is option B.
Which of the following statement is incorrect about D.D.T. ?
DDT (dichlorodiphenyltrichloroethane) is a colourless, crystalline, tasteless and almost odourless organochloride known for its insecticidal properties. It is a non-biodegradable, water-insoluble, chlorinated hydrocarbon once used worldwide as a major insecticide, especially in agriculture. In recent years, knowledge of its adverse impact on the environment has led to restrictions in its use. It is lipophilic, so, undergo bioconcentration when it enters into food chain. Milk is a carrier of DDT cause, DDT enters into food chain. Thus, the correct answer is option D.
A gene bank is a place where valuable plant material is preserved in viable condition-gene bank are part of -
VAM (Vesicular arbuscular mycorrhizae) represents
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