Crops having cry genes needs

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10.Biotechnology and its Application

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The crops having cry genes needs

No insecticide

Small amount of insecticide

Large amount of insecticide

None of the above

Solution

Bacillus thuringiensis is a natural insecticide with unusual properties that makes it useful for pest control in certain situations. Bacillus thuringiensis forms protein crystals (Cryprotein or cry gene) which contains a toxic insecticidal protein. The plant which is genetically modified with Bt toxin cry gene forms toxin inside its own plant cell to protect against insects and thus needs no external Insecticide

Standard 12

Biology

Match the columns :

Column – $I$ Column – $II$

$(1)$ Corn $(a)$ Boll worms

$(2)$ Tobacco $(b)$ Book worms

$(3)$ Cotton $(c)$ Cornborer

$(d)$ Milade gain Inkoganitia

easy

Identify the incorrect statement.

$(i)$ Bacillus thuringiensis are available in sachets as dried spores which are mixed with kerosine and sprayed on to vulnerable plants

$(ii)$ B. thuringiensis are used to control butterfly caterpillars, but leave other insects unharmed

$(iii) $ The toxin of B. thuringiensis is released in the blood of larvae and the larvae get killed

$(iv)$ By the development of methods of genetic engineering B. thuringiensis toxin genes have been introduced

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In $Bt$ cotton, the $Bt$ toxin present in plant tissue as protoxin is converted into active toxin due to

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(NEET-2015)

$A$ : Biofortified crops such as golden rice are helpful in overcoming the problem of night blindness in developing nations.

$R $ : It has enhanced nutritional content of vitamin $A.$

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The organism, which is used for gene transfer in higher plants is

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Column – $I$	Column – $II$
$(1)$ Corn	$(a)$ Boll worms
$(2)$ Tobacco	$(b)$ Book worms
$(3)$ Cotton	$(c)$ Cornborer
	$(d)$ Milade gain Inkoganitia

The crops having cry genes needs

Solution

Similar Questions

Match the columns : Column – $I$ Column – $II$ $(1)$ Corn $(a)$ Boll worms $(2)$ Tobacco $(b)$ Book worms $(3)$ Cotton $(c)$ Cornborer $(d)$ Milade gain Inkoganitia

In $Bt$ cotton, the $Bt$ toxin present in plant tissue as protoxin is converted into active toxin due to

$A$ : Biofortified crops such as golden rice are helpful in overcoming the problem of night blindness in developing nations. $R $ : It has enhanced nutritional content of vitamin $A.$

The organism, which is used for gene transfer in higher plants is

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Match the columns :

Column – $I$ Column – $II$

$(1)$ Corn $(a)$ Boll worms

$(2)$ Tobacco $(b)$ Book worms

$(3)$ Cotton $(c)$ Cornborer

$(d)$ Milade gain Inkoganitia

$A$ : Biofortified crops such as golden rice are helpful in overcoming the problem of night blindness in developing nations.

$R $ : It has enhanced nutritional content of vitamin $A.$