Question

Bacillus thuringiensis (Bt) strains have been
used for designing novel
(a) biofertilizers
(b) bio-metallurgical techniques
(c) bio-mineralization processes
(d) bioinsecticidal plants

Answer 1

Answer:

(a).biofertilizers .

Answer 2

The bacillus thuringiensis (Bt) strains have been  used for designing the novel (d) bioinsecticidal plants.

• The bacterium which produces an endotoxin is bacillus thuringiensis.
• The bacterium contains a gene called a cry gene which produces proteins from crystals. These proteins become activated in the pest gut's alkaline pH.
• This protein causes pores in the intestine which lead to cell bursting and insect death. Due to this property they are considered biopesticides. This bacterial gene can be used to design plants that are pest resistant.