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(B) Insect-resistant transgenic cotton,commonly known as $Bt$ cotton,is produced using genetic engineering techniques.This process involves the insert

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$A$ bacterium

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(B) Insect-resistant transgenic cotton,commonly known as $Bt$ cotton,is produced using genetic engineering techniques.This process involves the insertion of a specific $DNA$ segment (the $cry$ gene) derived from the soil bacterium $Bacillus$ $thuringiensis$.This gene encodes for a toxic protein that kills specific insect pests,such as bollworms,when they ingest the plant tissue.

Column-$I$	Column-$II$
$(1)$ Corn	$(a)$ Bollworms
$(2)$ Tobacco	$(b)$ Bookworms
$(3)$ Cotton	$(c)$ Corn borer
	$(d)$ Meloidogyne incognita

Insect resistance transgenic cotton has been produced by inserting a piece of $DNA$ from

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Match the columns:

Column-$I$ Column-$II$

$(1)$ Corn $(a)$ Bollworms

$(2)$ Tobacco $(b)$ Bookworms

$(3)$ Cotton $(c)$ Corn borer

$(d)$ Meloidogyne incognita

Bt toxins are initially inactive protoxins,but after ingestion by the insects,their inactive toxin becomes active due to the

$Bt$ cotton is

Identify the correct statement.

How does the $Bt$ toxin protein kill the insect?

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