The milk produced by the transgenic cow Rosie contained the human protein ________.

[Biotechnology-and-its-Applications] [class-xii ]

• insulin
• alpha-lactalbumin
• alpha-1-antitrypsin
• C peptide
Correct Option: B  [ alpha-lactalbumin ]

Remark: Rosie's milk contained the human alpha-lactalbumin.

If transgenic mice are found to be reliable for vaccine safety testing, they could replace the use of ________.

[Biotechnology-and-its-Applications] [class-xii ]

• rabbits
• monkeys
• pigs
• rats
Correct Option: B  [ monkeys ]

Remark: Transgenic mice could replace the use of monkeys to test the safety of vaccine batches.

Toxicity testing in transgenic animals allows results to be obtained in ________ time due to their increased sensitivity to toxic substances.

[Biotechnology-and-its-Applications] [class-xii ]

• more
• less
• variable
• fixed
Correct Option: B  [ less ]

Remark: Toxicity testing in sensitive transgenic animals allows results to be obtained in less time.

The manipulation of living organisms by the human race cannot go on any further, without ________.

[Biotechnology-and-its-Applications] [class-xii ]

• funding
• regulation
• scientific consensus
• profit
Correct Option: B  [ regulation ]

Remark: The manipulation of living organisms cannot continue without regulation, leading to ethical issues.

Basmati rice has ________ documented varieties grown in India.

[Biotechnology-and-its-Applications] [class-xii ]

• 12
• 27
• 50
• 100
Correct Option: B  [ 27 ]

Remark: There are 27 documented varieties of Basmati grown in India.

Industrialised nations are rich financially but poor in biodiversity and ________ knowledge.

[Biotechnology-and-its-Applications] [class-xii ]

• agricultural
• traditional
• scientific
• economic
Correct Option: B  [ traditional ]

Remark: Industrialised nations are financially rich but poor in biodiversity and traditional knowledge.

Tissue culture allows the propagation of a large number of plants in very short durations, a capacity that stems from ________.

[Biotechnology-and-its-Applications] [class-xii ]

• hybrid vigour
• totipotency
• somaclonal variation
• genetic engineering
Correct Option: B  [ totipotency ]

Remark: Totipotency, the capacity to generate a whole plant from any explant, allows for mass propagation.

The Green Revolution increased yields mainly due to the use of agrochemicals and improved ________.

[Biotechnology-and-its-Applications] [class-xii ]

• irrigation methods
• crop varieties
• harvesting equipment
• sowing techniques
Correct Option: B  [ crop varieties ]

Remark: Increased yields have partly been due to the use of improved crop varieties, but mainly due to agrochemicals and better management practices.

The failure of traditional breeding techniques to keep pace with demand necessitated the development of technology like ________.

[Biotechnology-and-its-Applications] [class-xii ]

• hybridization
• tissue culture
• polyploidy
• mutation breeding
Correct Option: B  [ tissue culture ]

Remark: As traditional breeding failed to keep pace with demand, tissue culture was developed.

GM crops reduce reliance on chemical pesticides by creating ________ crops.

[Biotechnology-and-its-Applications] [class-xii ]

• drought-resistant
• pest-resistant
• herbicide-tolerant
• virus-free
Correct Option: B  [ pest-resistant ]

Remark: Genetic modification has reduced reliance on chemical pesticides by producing pest-resistant crops.