Bt genes are introduced in cotton against the pest

Question

Bt genes are introduced in cotton against the pest

asked Jan 7, 2022 by anonymous

1 Answer

Answer :

Ans. Cotton Bollworm

answered Jan 7, 2022 by anonymous
selected Jan 7, 2022 by anonymous

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Last Answer : (a) Trichoderma sp. against certain plant pathogens.

Which one of the following is an example of carrying out biological control of pests/diseases using microbes ? (1) Lady bird beetle against aphids in mustard (2) Trichoderma sp. against certain plant pathgens (3) Nucleopolyhedrovirus against white rust in Brassica (4) Bt-cotton to increase cotton yield

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Last Answer : (2) Trichoderma sp. against certain plant pathgens

A genetically engineered form of brinjal known as the BT brinjal has been developed. The objective of this is (1) to make it pest resistant (2) to improve its taste and nutritive value (3) to make it drought resistant (4) to make its shelflife longer

Description : A genetically engineered form of brinjal known as the BT brinjal has been developed. The objective of this is (1) to make it pest resistant (2) to improve its taste and nutritive value (3) to make it drought resistant (4) to make its shelflife longer

Last Answer : (1) to make it pest resistant Explanation: Bt Brinjal is a genetically modified (GM) crop created by inserting Cry lAc gene from the soil bacterium Bacillus thuringiensis into Brinjal. The ... like the Brinjal Fruit and Shoot Borer (Leucinodes orbonalis) and Fruit Borer (Hell-coverpa armigera).

What is true about Bt toxin? (a) Bt protein exists as active toxin in the Bacillus. (b) The activated toxin enters the ovaries of the pest to sterilise it and thus prevent its multiplication. (c) The concerned Bacillus has antitoxins. (d) The inactive protoxin gets converted into active form in the insect gut.

Description : What is true about Bt toxin? (a) Bt protein exists as active toxin in the Bacillus. (b) The activated toxin enters the ovaries of the pest to sterilise it and thus prevent its multiplication. ... Bacillus has antitoxins. (d) The inactive protoxin gets converted into active form in the insect gut.

Last Answer : (d) The inactive protoxin gets converted into active form in the insect gut.

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Description : A natural to manage pest a). Bt b). Devine c). NPV d).All of the above

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A genetically engineered form of brinjal known as the BT brinjal has been developed. The objective of this is (1) to make it pest resistant (2) to improve its taste and nutritive value (3) to make it drought resistant (4) to make its shelflife longer

Description : A genetically engineered form of brinjal known as the BT brinjal has been developed. The objective of this is (1) to make it pest resistant (2) to improve its taste and nutritive value (3) to make it drought resistant (4) to make its shelflife longer

Last Answer : to make it pest resistant

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Description : The vegetable crop under approval for Bt. technology

Last Answer : Ans. Brinjal

Asseriton: Insect resistant transgenic cotton has been produced by inserting Bt gene Reason The Bt gene is derived form a bacterium

Description : Asseriton: Insect resistant transgenic cotton has been produced by inserting Bt gene Reason The Bt gene is derived form a bacterium

Last Answer : Asseriton: Insect resistant transgenic cotton has been produced by inserting Bt gene Reason The Bt ... If both the assertion and reason are false

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Description : Cultivation of Bt Cotton has been much in the news . The prefix "Bt" means

Last Answer : Cultivation of Bt Cotton has been much in the news . The prefix "Bt" means A. ... ligases D. carrying an endotoxin gene from bacillus thuringiensis

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Description : Bt cotton is

Last Answer : Bt cotton is A. Transgenic plant B. Mutated plant C. Cloned plant D. Hydrid plant

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Last Answer : Study statement a-d (about organic farming) and find out the correct ones. (a) Utilises genetically modified crops ... . a and b only D. b and c only

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Description : Bt seed is associated with - (1) Rice (2) Wheat (3) Cotton (4) Oil seeds

Last Answer : (3) Cotton Explanation: Cotton is the most popular of the Bt crops: it was planted on about 1 .8 million acres (728437 ha) in 1996 and 1997. The Bt gene was isolated and transferred ... genetically into the cotton seeds, protects the plants from bollworm (A. lepidoptora), a major pest of cotton.

Write a note on BT Cotton.

Description : Write a note on BT Cotton.

Last Answer : BT Cotton is a genetically modified or transgenic plant. It is a new variety in which a gene isolated from a bacterium called Bacillus thuringiensis has been newly introduced. The gene us responsible for producing a toxin which can kill the boll worm that attack the cotton plants.

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Last Answer : (c) Western ghats have a very high degree of species richness and endemism.

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Description : Match the following columns and select the correct option. Column-I Column-II (A) Bt cotton (i) Gene therapy (B) Adenosine (ii) Cellular defence deaminase deficiency (C) RNAi (iii) Detection of HIV infection (D) PCR (iv) Bacillus ... (i) (iv) (c) (ii) (iii) (iv) (i) (d) (i) (ii) (iii) (iv)

Last Answer : (a) (iv) (i) (ii) (iii)

Some of the characteristics of Bt cotton are (a) long fibre and resistance to aphids (b) medium yield, long fibre and resistance to beetle pests (c) high yield and production of toxic protein crystals which kill dipteran pests (d) high yield and resistance to bollworms.

Description : Some of the characteristics of Bt cotton are (a) long fibre and resistance to aphids (b) medium yield, long fibre and resistance to beetle pests (c) high yield and production of toxic protein crystals which kill dipteran pests (d) high yield and resistance to bollworms.

Last Answer : (d) high yield and resistance to bollworms.

Which of the following Bt crops is being grown in India by the farmers? (a) Brinjal (b) Soybean (c) Maize (d) Cotton

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Last Answer : (d) Cotton

In Bt cotton, the Bt toxin present in plant tissue as protoxin is converted into active toxin due to(a) action of gut microorganisms (b) presence of conversion factors in insect gut (c) alkaline pH of the insect gut (d) acidic pH of the insect gut.

Description : In Bt cotton, the Bt toxin present in plant tissue as protoxin is converted into active toxin due to (a) action of gut microorganisms (b) presence of conversion factors in insect gut (c) alkaline pH of the insect gut (d) acidic pH of the insect gut.

Last Answer : (c) alkaline pH of the insect gut

Bt cotton variety that was developed by the introduction of toxin gene of Bacillus thuringiensis (Bt) is resistant to (a) insect pests (b) fungal diseases (c) plant nematodes (d) insect predators.

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Last Answer : (a) insect pests

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Description : Consider the following statements (A-D) about organic farming. (A) Utilizes genetically modified crops like Bt cotton (B) Uses only naturally produced inputs like compost (C) Does not use pesticides and urea (D) Produces vegetables ... C and D (b) C and D only (c) B and C only (d) A and B only

Last Answer : (c) B and C only

The area under Bt – cotton in India is about (A) 6.4 mha (B) 5.4 mha (C) 4.4 mha (D) 3.4 mha

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Last Answer : (A) 6.4 mha

Bt cotton is resistant to bollworm, it is due to (a) Bt is repellent to bollworm(b) Bt is contact poison for bollworm (c) Bt is stomach poison; it changes the permeability of stomach due to generation of pores in alkaline environment of stomach (d) Bt is causing death due to asphagsiation of insect

Description : Bt cotton is resistant to bollworm, it is due to (a) Bt is repellent to bollworm(b) Bt is contact poison for bollworm (c) Bt is stomach poison; it changes the permeability of stomach due to generation of pores in alkaline environment of stomach (d) Bt is causing death due to asphagsiation of insect

Last Answer : (c) Bt is stomach poison; it changes the permeability of stomach due to generation of pores in alkaline environment of stomach

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Last Answer : b. 2002

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Last Answer : Cotton

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Last Answer : (a) binds with epithelial cells of midgut of the insect pest ultimately killing it

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