NCERT Class 12 Biology Gk Questions & Answers
11 Propionibacterium produces large holes in swiss cheese due to the
Answer: formation of large amount of CO2
12 The biggest constraint of plant breeding is
Answer: availability of desirable gene in the crop and its wild relatives.
15 Increase in the concentration of pollutants/chemicals in higher trophic levels, is known as
17 Breeding of crops to increase the levels of essential nutrients, is called
18 The technique of obtaining a large number of plantlets by tissue culture method is known as