Q 1915201169.     In a biology class, the students were discussing
the pest-resistant plant i.e., Bt cotton. One of
them said that production of pest--resistant
plants could decrease the use of pesticides. The
other student told that the toxic insecticidal
proteins secreted by Bacillus thuringiensis kill
the insects and not the bacteria itself.

(a) What values are reflected in class
discussion of students?
(b) Why do the toxic insecticidal proteins
secreted by Bacillus thuringiensis kill the
insects and not the bacteria itself?
(c) How is Bt cotton made to attain resistance
against bollworm?

NCERT Value Based 12/11/LAT

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