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Bt toxin genes have been expressed in pl...

Bt toxin genes have been expressed in plants in order to provide resistance against
(i) lepidopterans and fungi
(ii) animals and bacteria
(iii) bacteria and fungi
(iv) coleopterans and dipterans
(v) lepidopterans

A

(ii) and (iii)

B

(i),(ii) and (iv)

C

(iii) and (v)

D

(iv) and (v)

Text Solution

Verified by Experts

The correct Answer is:
D
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Read the following and answer questions from Q.1. to Q.5. given below: Plants having foreign genes in their genome through genetic engineering are called transgenic plants. Genes can be incorporated either through a vector or through direct introduction of DNA. Bt cotton is a genetically modified organism which is pestresistant. It contains gene cry I Ac and cry II Ab of Bacillus thuringiensis. It is used to control lepidopterans, coleopterans and dipterans. Bt cotton can resist cotton bollworm and produce higher yields. Cry gene produces cry protein or Bt toxin. It is an endotoxin which remains as protoxin in plants and converted to active toxin after getting ingested by the insects. Alkaline pH of the insect gut solubilizes the protein crystals, the activated toxin creates pores to the mid guts wall of theinsects which cause them to death. What is true about Bt cotton crops?

Read the following and answer questions from Q.1. to Q.5. given below: Plants having foreign genes in their genome through genetic engineering are called transgenic plants. Genes can be incorporated either through a vector or through direct introduction of DNA. Bt cotton is a genetically modified organism which is pestresistant. It contains gene cry I Ac and cry II Ab of Bacillus thuringiensis. It is used to control lepidopterans, coleopterans and dipterans. Bt cotton can resist cotton bollworm and produce higher yields. Cry gene produces cry protein or Bt toxin. It is an endotoxin which remains as protoxin in plants and converted to active toxin after getting ingested by the insects. Alkaline pH of the insect gut solubilizes the protein crystals, the activated toxin creates pores to the mid guts wall of theinsects which cause them to death. Cotton bollworms are killed by the protein encoded by the gene

Read the following and answer questions from Q.1. to Q.5. given below: Plants having foreign genes in their genome through genetic engineering are called transgenic plants. Genes can be incorporated either through a vector or through direct introduction of DNA. Bt cotton is a genetically modified organism which is pestresistant. It contains gene cry I Ac and cry II Ab of Bacillus thuringiensis. It is used to control lepidopterans, coleopterans and dipterans. Bt cotton can resist cotton bollworm and produce higher yields. Cry gene produces cry protein or Bt toxin. It is an endotoxin which remains as protoxin in plants and converted to active toxin after getting ingested by the insects. Alkaline pH of the insect gut solubilizes the protein crystals, the activated toxin creates pores to the mid guts wall of theinsects which cause them to death. Identify which of the following is not an advantage of GM crops?

NCERT FINGERTIPS-BIOTECHNOLOGY AND ITS APPLICATION-Biotechnology And Its Application
  1. Main objective of production of herbicide resistant GM crops is to

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  2. Study the following statements regarding Bt toxins produced by bacte...

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  3. Bt toxin genes have been expressed in plants in order to provide resis...

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  4. Bacillus thuringiensis forms protein crystals which contain insectidic...

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  5. Bt toxins are

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  6. Bt toxin protein crystals present in bacterium Bacillus thuringiensis,...

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  7. What causes the inactive form of Bt toxin i.e., protoxin to get conver...

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  8. Bt toxin kills insects by

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  9. The Bt toxin is not human beings because

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  10. Which of the following genes were introduced in cotton to protect it f...

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  11. CryllAb and crylAb produce toxins that control

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  12. Bt corn been made resistant from corn borer disease by intoduction of ...

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  13. Some of the characteristics of Bt cotton are

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  14. The process of RNA interference has been used to make tobacco plant re...

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  15. Which of the following is the nematode that attacks the roots of tobac...

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  16. RNA interference involves

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  17. Which of the following statements are correct regarding the process of...

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  18. The transgenic plant 'Flavr Savr' tomato carries an artificial for

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  19. Flavr Savr' variety of tomato which remains fresh for a longer period ...

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  20. Read the given statements and select the correct option Statement 1 ...

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