Bt Cotton

Q.

"Cry" genes or "Bt" genes are obtained from

1. Cotton pest

2. Bacillus thuringiensis

3. Tobacco plant

4. E. coli

Q. Which of the following Bt crops is being grown in India by the farmers?

1. Maize
2. Cotton
3. Soybean
4. Ground gram

Q. Some of the characteristics of Bt cotton are

1. long fibre and resistance to aphids
2. medium yield, long fibre and resistance to beetle pests
3. high yield and production of toxic protein crystals which kill dipteran pests
4. high yield and resistance to bollworms

Q. Regarding the assertion and reason, choose the correct option
Assertion[A]: Bt cotton became a commercial success.
Reason[R]: Bt cotton's endotoxins acted against sucking pests like jassids, aphids and whitefly.

1. Both A and R are true and R explains A
2. Both A and R are true R does not explain A
3. Both A and R are false
4. A is true and R is false

Q. Bacillus thuringiensis is a

1. Bacterium
2. Bioherbicide
3. Bio fertilizer
4. None of the above

Q. Insect-resistant transgenic cotton has been produced by inserting a piece of DNA from:

1. A virus
2. A bacterium
3. An insect
4. A wild relative of cotton

Q. Cultivation of Bt cotton has been much in the news. The prefix Bt stands for

1. barium-treated cotton seeds
2. bigger thread variety of cotton with better tensile strength
3. produced by biotechnology using restriction enzymes and ligases
4. Bacillus thuringiensis, the bacteria from which the endotoxin gene is taken and inserted into cotton plant

Q. Some of the characteristics of Bt cotton are:

1. Long fiber and resistance to aphids
2. Medium yield, long fiber and resistance to beetle pests.
3. High yield and production of toxic protein crystals which kill dipteran pests
4. High yield and resistance to bollworms

Q. Bt in Bt cotton stands for:

1. Biotechnology
2. Bollworm toxin
3. Bacillus thuringiensis
4. Bacterial tolerant

Q.

"Bt cotton" is resistant to:

1. Insects

2. Drought

3. Herbicides

4. Salt