Gujarati
Hindi
10.Biotechnology and its Application
medium

Cultivation of $Bt$ cotton has been much in the news. The prefix $Bt$ means

A

barium-treated cotton seeds

B

bigger thread variety of cotton with better tensile strength

C

produced by biotechnology using restriction enzymes and ligases

D

carrying an endotoxin gene from Bacillus thuringiensis

(AIIMS-2008)

Solution

Bacillus thuringiensis, or $Bt$, is a bacterium that occurs naturally in the soil, produces a protein that is toxic to certain insect pests, and is widely used as a pest control agent. It is also extremely host-specific.

Standard 12
Biology

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