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'Bt Cotton''...

'Bt Cotton''

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Bt cotton is a genetically organism (GMO) or genetically modified pest resistant plant cotton variety, which produces an insecticide activity to bollworm.
Strains of the bacterium Bacillus thuringienis produce over 200 different Bt toxins, each harmful to different insects. Most Bt toxins are insecticidal to the larva of moths and butterfies, beeties, cotton bollworms and gatfies but are harmless to other forms of life. The genes are encoded for toxic crystals in the Cry group of endotoxin. When insects attack and eat the cotton plant the Cry toxins are dissolved in the insect.s stomach.
The epithelial membranes of the gut block certain vital nutrients thereby sufficient regulation of potassium ions are lost in the insects and results in the death of epithelial cells in the intestine membrane which leads to the death of the lervae.
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Choose the correct statement (i) Nucleo polyhedrovirus is a biofertilizer (ii) Anand Mohan chakrabarty obtained patent for GEM. (iii) Bt - Cotton is a genetically engineered plant. (iv) UV is not ideal as a disinfectant in sewage treatement.

Study statement a-d (about organic farming) and find out the correct ones. (a) Utilises genetically modified crops like Bt cotton (b) Uses only naturally produced input like compost (c) Does not use pesticide and urea (d) Produces vegetables rich in vitamins and minerals

Match column I with column II and select the correct answer from the given codes. {:(Column I,Column II),(A."Ganga action plan",(i)N_(2) "fixing cyanobacterium"),(B."Bt cotton",(ii)"Ministry of environment and forests"),(C."Rhizobium",(iii)"Insect resistant plant"),(D."Nostoc",(iv)N_(2)"fixing bacterium"):}

Find whether the following sentences are true or false. If false correct the statement. Cotton cloth is not suitable for summer season.

Hand gloves, shampoo, soap, medicated cotton

List the advantage of Bt ctton.

Analogy: Cotton:natural : : polyester:----

True or Flase :Cotton is a natural polymer.

Which of the following scientist developed world's first cotton hybrid?