Importance and utility of biotechnology in agriculture Part 1

Question No. 1 Marks +1 -0 Time

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Which of the following is a primary advantage of using herbicide-tolerant crops developed through biotechnology?

A. Increased nutritional content
B. Enhanced flavor profile
C. Simplified and more effective weed management
D. Greater resistance to insect pests

Question No. 2 Marks +1 -0 Time

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What is the key principle behind the creation of 'Golden Rice'?

A. To enhance its protein content
B. To increase its iron and zinc levels
C. To improve its resistance to drought
D. To produce beta-carotene, a precursor of Vitamin A

Question No. 3 Marks +1 -0 Time

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The 'Bt' in Bt cotton refers to a toxin produced by which organism?

A. A fungus (Beauveria bassiana)
B. A bacterium (Bacillus thuringiensis)
C. A virus (Baculovirus)
D. A nematode (Steinernema carpocapsae)

Question No. 4 Marks +1 -0 Time

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Which biotechnology technique is commonly used for the rapid multiplication of disease-free plants?

A. Marker-assisted selection
B. Protoplast fusion
C. Plant tissue culture (micropropagation)
D. Gene sequencing

Question No. 5 Marks +1 -0 Time

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What is the main purpose of marker-assisted selection (MAS) in plant breeding?

A. To create genetically modified organisms directly
B. To identify desirable genes in plants using molecular markers
C. To induce mutations in plant seeds
D. To sterilize plant tissues for culture

Question No. 6 Marks +1 -0 Time

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Which of the following is an example of a biopesticide?

A. Synthetic pyrethroids
B. Organophosphates
C. Neem-based formulations
D. Glyphosate

Question No. 7 Marks +1 -0 Time

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How does the Flavr Savr™ tomato exhibit a longer shelf life?

A. Through the silencing of a gene responsible for a ripening enzyme
B. By producing a natural fungicide
C. By having a thicker skin due to an additional gene
D. By resisting common viral infections

Question No. 8 Marks +1 -0 Time

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Which of the following is a significant concern related to the use of genetically modified (GM) crops?

A. They are universally less nutritious than conventional crops
B. The potential for gene flow to wild relatives
C. Their inability to grow in diverse climates
D. They require significantly more water than non-GM crops

Question No. 9 Marks +1 -0 Time

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Artificial Insemination (AI) in livestock is a biotechnological tool primarily used for:

A. Cloning superior animals
B. Widespread dissemination of superior male genetics
C. Creating transgenic animals
D. Inducing multiple ovulations in females

Question No. 10 Marks +1 -0 Time

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Biofortification aims to:

A. Increase the resistance of crops to pests and diseases
B. Enhance the nutritional value of staple crops
C. Improve the flavor and texture of food products
D. Extend the shelf life of perishable produce

Question No. 11 Marks +1 -0 Time

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What is the function of 'chitinase' gene when inserted into a crop plant?

A. It provides tolerance to high salinity.
B. It confers resistance to fungal pathogens.
C. It enhances the photosynthetic efficiency.
D. It makes the plant resistant to insects.

Question No. 12 Marks +1 -0 Time

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Which technique involves shooting microscopic particles coated with DNA into plant cells?

A. Electroporation
B. Agrobacterium-mediated transformation
C. Protoplast fusion
D. Biolistics (Gene Gun)

Question No. 13 Marks +1 -0 Time

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What is a primary benefit of using biofertilizers like Rhizobium?

A. They act as a broad-spectrum pesticide.
B. They enhance the nitrogen-fixing capacity of leguminous plants.
C. They improve the soil structure and water retention.
D. They protect plants from viral infections.

Question No. 14 Marks +1 -0 Time

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Cryopreservation in agricultural biotechnology refers to the:

A. Preservation of biological material at very low temperatures.
B. Use of cold to induce mutations.
C. Process of freeze-drying food products.
D. Cultivation of crops in cold climates.

Question No. 15 Marks +1 -0 Time

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The production of 'spider silk' in the milk of genetically modified goats is an example of:

A. Gene therapy
B. Pharming (Biopharming)
C. Xenotransplantation
D. Cloning

Question No. 16 Marks +1 -0 Time

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Which of the following is NOT a benefit of Integrated Pest Management (IPM)?

A. Reduced reliance on chemical pesticides
B. Lower risk of pesticide resistance development
C. Complete eradication of all pest species
D. More environmentally sustainable pest control

Question No. 17 Marks +1 -0 Time

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Somaclonal variation is a phenomenon observed in:

A. Plants grown from seeds of the same parent
B. Plants regenerated from tissue culture
C. Plants that have undergone hybridization
D. Animals produced by artificial insemination

Question No. 18 Marks +1 -0 Time

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What is the primary role of Agrobacterium tumefaciens in plant biotechnology?

A. It is a common plant pathogen that needs to be controlled.
B. It acts as a natural vector for introducing foreign genes into plants.
C. It produces a natural insecticide.
D. It is a source of heat-resistant enzymes.

Question No. 19 Marks +1 -0 Time

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The 'terminator technology' in GM seeds, which was highly controversial, was designed to:

A. Make the crops resistant to all known herbicides.
B. Produce sterile seeds in the second generation.
C. Enhance the flavor of the produce.
D. Increase the height of the plant.

Question No. 20 Marks +1 -0 Time

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Which of the following is an example of a 'plant-incorporated protectant' (PIP)?

A. A neem-based spray applied to a crop.
B. The Bt toxin produced within a GM corn plant.
C. Ladybugs released to control aphids.
D. A synthetic chemical pesticide.

Question No. 21 Marks +1 -0 Time

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What is a potential risk of using virus-resistant GM crops?

A. The inserted viral gene could recombine with other viral genes to create new, more virulent viruses.
B. The crops might become toxic to humans.
C. The crops could lose their resistance over time.
D. The crops may require more fertilizer.

Question No. 22 Marks +1 -0 Time

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Multiple Ovulation Embryo Transfer (MOET) is a technique used to:

A. Increase the number of offspring from a genetically superior female.
B. Clone a single animal multiple times.
C. Create genetically modified embryos.
D. Select for male or female offspring.

Question No. 23 Marks +1 -0 Time

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The use of DNA fingerprinting in agriculture is beneficial for:

A. Determining the age of a plant.
B. Identifying and protecting plant varieties.
C. Estimating the yield of a crop.
D. Monitoring the water content of the soil.

Question No. 24 Marks +1 -0 Time

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What is the main advantage of using drones in conjunction with biotechnology in agriculture?

A. They can replace the need for irrigation.
B. They can perform precise application of biopesticides or monitor crop health in real-time.
C. They can pollinate crops more effectively than bees.
D. They can physically remove weeds from the field.

Question No. 25 Marks +1 -0 Time

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Which of the following is a reasoning-based argument often used by critics of agricultural biotechnology?

A. The technology is too new to have any proven benefits.
B. The focus on a few GM crops could lead to a loss of biodiversity.
C. All GM foods cause allergic reactions in humans.
D. Biotechnology has no role to play in sustainable agriculture.

Question No. 26 Marks +1 -0 Time

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The development of drought-tolerant crops through biotechnology is an example of improving which type of trait?

A. Biotic stress resistance
B. Abiotic stress tolerance
C. Nutritional quality
D. Yield enhancement

Question No. 27 Marks +1 -0 Time

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What is the role of a selectable marker gene in the process of creating a GM plant?

A. It is the gene that provides the desired agricultural trait.
B. It helps to identify the cells that have successfully incorporated the foreign DNA.
C. It makes the plant more nutritious.
D. It ensures that the foreign gene is expressed in all parts of the plant.

Question No. 28 Marks +1 -0 Time

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RNA interference (RNAi) technology can be used in agriculture to:

A. Increase the rate of photosynthesis.
B. Silence specific genes, for example, to create pest-resistant plants.
C. Introduce new genes into a plant.
D. Improve the efficiency of nitrogen fixation.

Question No. 29 Marks +1 -0 Time

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From a socioeconomic perspective, what is a potential disadvantage of GM crops for small-scale farmers in developing countries?

A. The seeds are often more expensive and may require the purchase of specific chemicals.
B. The crops are less productive than traditional varieties.
C. The technology is too complex for small-scale farmers to use.
D. The crops are not adapted to local growing conditions.

Question No. 30 Marks +1 -0 Time

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Which of the following is a primary goal of using biotechnology in aquaculture?

A. To decrease the size of fish to fit in smaller ponds.
B. To enhance growth rates and disease resistance in fish.
C. To make fish taste more like chicken.
D. To reduce the water requirement for fish farming.

Question No. 31 Marks +1 -0 Time

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What is meant by 'protoplast fusion' in plant biotechnology?

A. The fusion of two plant cells after their cell walls have been removed.
B. The combination of DNA from two different species.
C. The merging of two different types of pollen.
D. The fusion of a plant cell with a bacterial cell.

Question No. 32 Marks +1 -0 Time

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The use of Trichoderma as a bio-control agent is an example of controlling:

A. Insect pests
B. Fungal diseases
C. Weeds
D. Nematodes

Question No. 33 Marks +1 -0 Time

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Why is public perception a significant factor in the adoption of agricultural biotechnology?

A. Because it directly influences government funding for research.
B. Because consumer acceptance or rejection of GM products can impact their commercial success.
C. Because scientists require public approval before conducting experiments.
D. Because it determines the nutritional value of the crops.

Question No. 34 Marks +1 -0 Time

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What is 'in vitro' selection in the context of plant biotechnology?

A. Selecting plants directly in the field based on their performance.
B. Screening plant cells or tissues in a laboratory for desirable traits like salt tolerance.
C. Choosing the best seeds for planting based on their size.
D. Using animals to select the most palatable plants.

Question No. 35 Marks +1 -0 Time

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How can biotechnology contribute to reducing the environmental footprint of agriculture?

A. By increasing the use of broad-spectrum chemical fertilizers.
B. By developing crops that require more frequent tilling of the soil.
C. By creating crops with improved nutrient use efficiency, reducing the need for fertilizers.
D. By promoting the cultivation of a single crop variety over large areas (monoculture).

Question No. 36 Marks +1 -0 Time

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Which of the following represents a factual statement, not a potential risk or speculation?

A. All GM foods will eventually cause health problems in humans.
B. Consuming GM food will alter a person's DNA.
C. Bt corn contains a gene from the bacterium Bacillus thuringiensis.
D. GM crops are the only solution to world hunger.

Question No. 37 Marks +1 -0 Time

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The main reason for producing haploid plants through anther or pollen culture is to:

A. Increase the size of the fruit.
B. Shorten the time required to develop new, pure-line varieties.
C. Create plants with double the number of chromosomes.
D. Improve the taste of the plant.

Question No. 38 Marks +1 -0 Time

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What is a 'bioreactor' used for in the context of plant biotechnology?

A. A device for measuring the rate of photosynthesis in plants.
B. A large-scale system for growing plant cells or tissues to produce valuable compounds.
C. A type of tractor that runs on biofuels.
D. A container for composting agricultural waste.

Question No. 39 Marks +1 -0 Time

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Which statement best describes the regulation of GM foods?

A. There are no regulations for GM foods anywhere in the world.
B. All countries have the exact same regulations for GM foods.
C. Regulations for GM foods, including labeling, vary significantly from country to country.
D. GM foods are only regulated in the United States.

Question No. 40 Marks +1 -0 Time

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The term 'transgene' refers to:

A. A gene that has been transferred from one organism to another by natural means.
B. A gene that has been artificially introduced into the genome of another organism.
C. A gene that is found in all living organisms.
D. A gene that controls the process of transpiration in plants.

Question No. 41 Marks +1 -0 Time

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What is the primary function of a 'promoter' in a gene construct used for creating a GM plant?

A. It is the part of the gene that gets translated into a protein.
B. It acts as a switch that controls the expression of the introduced gene.
C. It is the gene that confers antibiotic resistance.
D. It helps the foreign DNA to integrate into the host genome.

Question No. 42 Marks +1 -0 Time

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Which of the following is a benefit of producing virus-free plants through meristem culture?

A. The plants will also be resistant to all insect pests.
B. Meristematic tissues are often free of viruses even if the rest of the plant is infected.
C. The resulting plants will have a higher nutritional value.
D. The process is cheaper and faster than growing plants from seed.

Question No. 43 Marks +1 -0 Time

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What is a potential 'superweed' in the context of agricultural biotechnology?

A. A weed that is exceptionally large.
B. A weed that has acquired a trait, like herbicide resistance, from a GM crop.
C. A weed that is highly nutritious.
D. A crop plant that grows in the wrong place.

Question No. 44 Marks +1 -0 Time

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The use of 'ice-minus' bacteria (a genetically modified strain of Pseudomonas syringae) in agriculture is intended to:

A. Create ice for cooling purposes.
B. Protect plants from frost damage.
C. Increase the water content of snow.
D. Make plants more resistant to heat.

Question No. 45 Marks +1 -0 Time

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Why is 'genetic diversity' important for agriculture?

A. It makes all the crops in a field identical.
B. It provides the raw material for breeders to develop new crop varieties with desirable traits.
C. It ensures that all crops have the same nutritional value.
D. It simplifies the process of harvesting.

Question No. 46 Marks +1 -0 Time

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What does 'xenotransplantation', a field of biotechnology, involve?

A. The transplantation of organs or tissues between different species.
B. The transfer of genes between different plant species.
C. The use of plants to produce animal proteins.
D. The cloning of extinct animals.

Question No. 47 Marks +1 -0 Time

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How does the use of pheromone traps in agriculture represent a biotechnological approach to pest control?

A. The traps physically kill the insects.
B. They use synthetic chemicals that mimic the natural attractants of insects to monitor or disrupt mating.
C. They introduce a disease that affects the pests.
D. They release predators that eat the pests.

Question No. 48 Marks +1 -0 Time

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What is the primary environmental benefit of conservation tillage, which is often facilitated by herbicide-tolerant GM crops?

A. It increases the amount of sunlight reaching the soil.
B. It reduces soil erosion and improves soil health.
C. It eliminates the need for any form of weed control.
D. It makes the soil warmer in the spring.

Question No. 49 Marks +1 -0 Time

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A farmer notices that a particular insect pest is no longer controlled by his Bt corn. What is the most likely scientific explanation?

A. The corn has lost its Bt gene.
B. The insects have developed resistance to the Bt toxin.
C. The climate has changed, making the toxin ineffective.
D. The soil has become depleted of essential nutrients.

Question No. 50 Marks +1 -0 Time

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Which of the following is an ethical consideration specifically related to animal biotechnology?

A. Whether it is right to alter the genetic makeup of animals for human benefit.
B. The cost of producing genetically modified animals.
C. The time it takes to develop a new animal breed.
D. The difficulty of raising animals in a controlled environment.

Question No. 51 Marks +1 -0 Time

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What is the significance of the 'Green Revolution' in the context of the development of agricultural biotechnology?

A. It was a movement that rejected all forms of modern agriculture.
B. It focused exclusively on organic farming methods.
C. It demonstrated the potential for significant yield increases through breeding and chemical inputs, setting the stage for further technological advancements like biotechnology.
D. It was the period when the first GM crops were commercially released.

Question No. 52 Marks +1 -0 Time

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If a biofortified crop is developed to have higher levels of iron, what public health issue is it primarily aiming to address?

A. Obesity
B. Anemia
C. Diabetes
D. Scurvy

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