The green revolution succeeded in increasing the yield of crops mainly due to the use of
$I.$ improved varieties of the crops
$II.$ Agro-chemicals
$III.$ Better management practices
Choose the correct option.
$I$ and $II$ only
$I$ and $III$ only
$II$ and $III$ only
$I, II$ and $III$
Bt toxin protein crystals present in bacterium Bacillus thuringiensis, do not kill the bacteria themselves because
Which of the following ways are suitable for increasing food production?
$I$. Agrochemical based agriculture
$II$. Organic agriculture
$III$. Genetically engineered crop-based agriculture
Choose the correct option
How is biotechnology useful for increasing food production in agriculture.
Compare and contrast the advantages and disadvantages of production of genetically modified crops.
Give information about pest resistant plants. Explain $\rm {RNA}$ interference.