NEET 2009 · Class 12

Microbes in Human Welfare

The bacterium Bacillus thuringiensis is widely used in contemporary biology as (2009)

  1. (A)insecticide
  2. (B)agent for production of dairy products
  3. (C)source of industrial enzyme
  4. (D)indicator of water pollution

The NCERT line that answers it

Verbatim line

An example of microbial biocontrol agents that can be introduced in order to control butterfly caterpillars is the bacteria *Bacillus thuringiensis* (often written as *Bt*).

Chapter
Microbes in Human Welfare
Section
8.5 MICROBES AS BIOCONTROL AGENTS
Page
8
Words matched
52 of 52

The answer appears as a continuous sentence in NCERT. This is that sentence.

How this line gives the answer

0, emb=0.9524, combined=0.9715). Verified: high — The span explicitly states Bacillus thuringiensis is used 'to control butterfly caterpillars,' which directly establishes its function as an insecticide, matching option A.

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Question text is reproduced from the published NEET 2009 paper for study and commentary. NCERT text is quoted, not redistributed; textbooks remain at ncert.nic.in. Our mapping method, including its measured error rates, is published at /methodology.