Question

Match the following

	Column A		Column B
p	Bacillus thuringiensis	1	Bio fertiliser
q	Rhizobium	2	Agrochemical
r	Urea	3	Biopesticide

• A. p - 1, q - 3, r - 2
  
• B. p - 3, q - 1, r - 2
  
• C. p - 2, q - 1, r - 3
  
• D. p - 3, q - 2, r - 1
  

Answer 1

The correct option is B p - 3, q - 1, r - 2


Bacillus thuringiensis is used as a biopesticide to kill the pests. B.thuringiensis has cry gene that produces a protein in its inactive form. This protein gets activated in alkaline pH. When the spores of Bt is consumed by the pests, in the gut of

Biofertilizers are living organisms that can increase the fertility of the soil by natural processes. For example, Rhizobium bacteria which lives as a symbiont in the root nodules of leguminous plants. They convert nitrogen into ammonia. Ammonia, being toxic in nature. is rapidly absorbed into organic compounds. Nitrogen fixation helps in increasing soil productivity and soil fertility.
Fertilizer is defined as any organic or inorganic substance, natural or artificial, supplying one or more of the chemical elements/nutrients required for plant growth. Urea is one such example rich in nitrogen.