347674
Among the following which characteristics is applicable to Bt-cotton?
1 Bt is abbreviated term for bacterial toxin
2 Such a cotton is resistant to army worm and beetles
3 The toxin is activated in the plant body just before it enters in insect.
4 The toxin is coded by a gene called 'cry' & inserted in plants by E.coli vector
Explanation:
Bt refers to Bacillus thuringiensis .Btcotton are resistant against lepidopterans (tobacco budworm, armyworm), coleopterans (beetles) and dipterans (flies, mosquitoes)
BIOXII12: BIOTECHNOLOGY AND ITS APPLICATIONS
347675
\(B t\) toxins are
1 Intracellular polypeptides
2 Intracellular lipids
3 Intracellular crystalline proteins
4 Extracellular crystalline proteins
Explanation:
\(B t\) toxins are Intracellular crystalline proteins which exist as inactive protoxins but once an insect ingest the inactive toxin. It is converted into active form of toxin due to alkaline \(\mathrm{pH}\) of the gut which solubilize the crystals.
BIOXII12: BIOTECHNOLOGY AND ITS APPLICATIONS
347676
Bt toxin protein crystals present in bacterium Bacillus thuringiensis , do not kill the bacterium because
1 Bacteria are resistant to the toxin
2 Bacteria enclose toxins in a special sac
3 Toxins occur as inactive protoxins in bacteria
4 Both 2 and 3
Explanation:
Bt toxin protein crystals present in bacterium, Bacillus thuringiensis, do not kill the bacterium itself. This is because the toxin occurs as inactive protoxin in bacterium.
BIOXII12: BIOTECHNOLOGY AND ITS APPLICATIONS
347677
The capacity to generate a whole plant from any cell of the plant is called:
1 Totipotency
2 Micropropagation
3 Differentiation
4 Somatic hybridization
Explanation:
Totipotency is defined as the capacity to generate a whole plant from any cell of the plant.
NEET - 2024
BIOXII12: BIOTECHNOLOGY AND ITS APPLICATIONS
347678
Assertion : A crop expressing cry gene is usually resistant to group of insects Reason : 'cry' proteins produced from Bacillus thuringiensis is toxic to larvae of certain insects
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
Cry protein is toxic to larvae of certain insects, gene encoding the 'cry' protein i.e cry gene has been isolated and transferred to several crops .Crops expressing 'cry' gene is usually resistant to group of insects.
347674
Among the following which characteristics is applicable to Bt-cotton?
1 Bt is abbreviated term for bacterial toxin
2 Such a cotton is resistant to army worm and beetles
3 The toxin is activated in the plant body just before it enters in insect.
4 The toxin is coded by a gene called 'cry' & inserted in plants by E.coli vector
Explanation:
Bt refers to Bacillus thuringiensis .Btcotton are resistant against lepidopterans (tobacco budworm, armyworm), coleopterans (beetles) and dipterans (flies, mosquitoes)
BIOXII12: BIOTECHNOLOGY AND ITS APPLICATIONS
347675
\(B t\) toxins are
1 Intracellular polypeptides
2 Intracellular lipids
3 Intracellular crystalline proteins
4 Extracellular crystalline proteins
Explanation:
\(B t\) toxins are Intracellular crystalline proteins which exist as inactive protoxins but once an insect ingest the inactive toxin. It is converted into active form of toxin due to alkaline \(\mathrm{pH}\) of the gut which solubilize the crystals.
BIOXII12: BIOTECHNOLOGY AND ITS APPLICATIONS
347676
Bt toxin protein crystals present in bacterium Bacillus thuringiensis , do not kill the bacterium because
1 Bacteria are resistant to the toxin
2 Bacteria enclose toxins in a special sac
3 Toxins occur as inactive protoxins in bacteria
4 Both 2 and 3
Explanation:
Bt toxin protein crystals present in bacterium, Bacillus thuringiensis, do not kill the bacterium itself. This is because the toxin occurs as inactive protoxin in bacterium.
BIOXII12: BIOTECHNOLOGY AND ITS APPLICATIONS
347677
The capacity to generate a whole plant from any cell of the plant is called:
1 Totipotency
2 Micropropagation
3 Differentiation
4 Somatic hybridization
Explanation:
Totipotency is defined as the capacity to generate a whole plant from any cell of the plant.
NEET - 2024
BIOXII12: BIOTECHNOLOGY AND ITS APPLICATIONS
347678
Assertion : A crop expressing cry gene is usually resistant to group of insects Reason : 'cry' proteins produced from Bacillus thuringiensis is toxic to larvae of certain insects
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
Cry protein is toxic to larvae of certain insects, gene encoding the 'cry' protein i.e cry gene has been isolated and transferred to several crops .Crops expressing 'cry' gene is usually resistant to group of insects.
347674
Among the following which characteristics is applicable to Bt-cotton?
1 Bt is abbreviated term for bacterial toxin
2 Such a cotton is resistant to army worm and beetles
3 The toxin is activated in the plant body just before it enters in insect.
4 The toxin is coded by a gene called 'cry' & inserted in plants by E.coli vector
Explanation:
Bt refers to Bacillus thuringiensis .Btcotton are resistant against lepidopterans (tobacco budworm, armyworm), coleopterans (beetles) and dipterans (flies, mosquitoes)
BIOXII12: BIOTECHNOLOGY AND ITS APPLICATIONS
347675
\(B t\) toxins are
1 Intracellular polypeptides
2 Intracellular lipids
3 Intracellular crystalline proteins
4 Extracellular crystalline proteins
Explanation:
\(B t\) toxins are Intracellular crystalline proteins which exist as inactive protoxins but once an insect ingest the inactive toxin. It is converted into active form of toxin due to alkaline \(\mathrm{pH}\) of the gut which solubilize the crystals.
BIOXII12: BIOTECHNOLOGY AND ITS APPLICATIONS
347676
Bt toxin protein crystals present in bacterium Bacillus thuringiensis , do not kill the bacterium because
1 Bacteria are resistant to the toxin
2 Bacteria enclose toxins in a special sac
3 Toxins occur as inactive protoxins in bacteria
4 Both 2 and 3
Explanation:
Bt toxin protein crystals present in bacterium, Bacillus thuringiensis, do not kill the bacterium itself. This is because the toxin occurs as inactive protoxin in bacterium.
BIOXII12: BIOTECHNOLOGY AND ITS APPLICATIONS
347677
The capacity to generate a whole plant from any cell of the plant is called:
1 Totipotency
2 Micropropagation
3 Differentiation
4 Somatic hybridization
Explanation:
Totipotency is defined as the capacity to generate a whole plant from any cell of the plant.
NEET - 2024
BIOXII12: BIOTECHNOLOGY AND ITS APPLICATIONS
347678
Assertion : A crop expressing cry gene is usually resistant to group of insects Reason : 'cry' proteins produced from Bacillus thuringiensis is toxic to larvae of certain insects
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
Cry protein is toxic to larvae of certain insects, gene encoding the 'cry' protein i.e cry gene has been isolated and transferred to several crops .Crops expressing 'cry' gene is usually resistant to group of insects.
347674
Among the following which characteristics is applicable to Bt-cotton?
1 Bt is abbreviated term for bacterial toxin
2 Such a cotton is resistant to army worm and beetles
3 The toxin is activated in the plant body just before it enters in insect.
4 The toxin is coded by a gene called 'cry' & inserted in plants by E.coli vector
Explanation:
Bt refers to Bacillus thuringiensis .Btcotton are resistant against lepidopterans (tobacco budworm, armyworm), coleopterans (beetles) and dipterans (flies, mosquitoes)
BIOXII12: BIOTECHNOLOGY AND ITS APPLICATIONS
347675
\(B t\) toxins are
1 Intracellular polypeptides
2 Intracellular lipids
3 Intracellular crystalline proteins
4 Extracellular crystalline proteins
Explanation:
\(B t\) toxins are Intracellular crystalline proteins which exist as inactive protoxins but once an insect ingest the inactive toxin. It is converted into active form of toxin due to alkaline \(\mathrm{pH}\) of the gut which solubilize the crystals.
BIOXII12: BIOTECHNOLOGY AND ITS APPLICATIONS
347676
Bt toxin protein crystals present in bacterium Bacillus thuringiensis , do not kill the bacterium because
1 Bacteria are resistant to the toxin
2 Bacteria enclose toxins in a special sac
3 Toxins occur as inactive protoxins in bacteria
4 Both 2 and 3
Explanation:
Bt toxin protein crystals present in bacterium, Bacillus thuringiensis, do not kill the bacterium itself. This is because the toxin occurs as inactive protoxin in bacterium.
BIOXII12: BIOTECHNOLOGY AND ITS APPLICATIONS
347677
The capacity to generate a whole plant from any cell of the plant is called:
1 Totipotency
2 Micropropagation
3 Differentiation
4 Somatic hybridization
Explanation:
Totipotency is defined as the capacity to generate a whole plant from any cell of the plant.
NEET - 2024
BIOXII12: BIOTECHNOLOGY AND ITS APPLICATIONS
347678
Assertion : A crop expressing cry gene is usually resistant to group of insects Reason : 'cry' proteins produced from Bacillus thuringiensis is toxic to larvae of certain insects
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
Cry protein is toxic to larvae of certain insects, gene encoding the 'cry' protein i.e cry gene has been isolated and transferred to several crops .Crops expressing 'cry' gene is usually resistant to group of insects.
347674
Among the following which characteristics is applicable to Bt-cotton?
1 Bt is abbreviated term for bacterial toxin
2 Such a cotton is resistant to army worm and beetles
3 The toxin is activated in the plant body just before it enters in insect.
4 The toxin is coded by a gene called 'cry' & inserted in plants by E.coli vector
Explanation:
Bt refers to Bacillus thuringiensis .Btcotton are resistant against lepidopterans (tobacco budworm, armyworm), coleopterans (beetles) and dipterans (flies, mosquitoes)
BIOXII12: BIOTECHNOLOGY AND ITS APPLICATIONS
347675
\(B t\) toxins are
1 Intracellular polypeptides
2 Intracellular lipids
3 Intracellular crystalline proteins
4 Extracellular crystalline proteins
Explanation:
\(B t\) toxins are Intracellular crystalline proteins which exist as inactive protoxins but once an insect ingest the inactive toxin. It is converted into active form of toxin due to alkaline \(\mathrm{pH}\) of the gut which solubilize the crystals.
BIOXII12: BIOTECHNOLOGY AND ITS APPLICATIONS
347676
Bt toxin protein crystals present in bacterium Bacillus thuringiensis , do not kill the bacterium because
1 Bacteria are resistant to the toxin
2 Bacteria enclose toxins in a special sac
3 Toxins occur as inactive protoxins in bacteria
4 Both 2 and 3
Explanation:
Bt toxin protein crystals present in bacterium, Bacillus thuringiensis, do not kill the bacterium itself. This is because the toxin occurs as inactive protoxin in bacterium.
BIOXII12: BIOTECHNOLOGY AND ITS APPLICATIONS
347677
The capacity to generate a whole plant from any cell of the plant is called:
1 Totipotency
2 Micropropagation
3 Differentiation
4 Somatic hybridization
Explanation:
Totipotency is defined as the capacity to generate a whole plant from any cell of the plant.
NEET - 2024
BIOXII12: BIOTECHNOLOGY AND ITS APPLICATIONS
347678
Assertion : A crop expressing cry gene is usually resistant to group of insects Reason : 'cry' proteins produced from Bacillus thuringiensis is toxic to larvae of certain insects
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
Cry protein is toxic to larvae of certain insects, gene encoding the 'cry' protein i.e cry gene has been isolated and transferred to several crops .Crops expressing 'cry' gene is usually resistant to group of insects.
