Importance and utility of biotechnology in agriculture Part 2

Question No. 1 Marks +1 -0 Time

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Which molecular technique is used to amplify a specific DNA sequence, allowing for the detection of pathogens or verification of genetic modification?

A. Western Blotting
B. Polymerase Chain Reaction (PCR)
C. Chromatography
D. Spectrophotometry

Question No. 2 Marks +1 -0 Time

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What is a 'refuge' strategy in the context of managing insect resistance to Bt crops?

A. Planting a portion of the field with non-Bt varieties of the same crop.
B. Using a different type of pesticide in a designated area.
C. Creating a sanctuary for beneficial insects.
D. Storing a portion of the harvest in a separate facility.

Question No. 3 Marks +1 -0 Time

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The development of crops that can thrive in salty soil is an example of enhancing tolerance to what kind of stress?

A. Biotic stress
B. Mechanical stress
C. Abiotic stress
D. Pathogenic stress

Question No. 4 Marks +1 -0 Time

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What is the primary purpose of creating 'male-sterile' lines of plants using biotechnology?

A. To make the plants more resistant to diseases that affect male flowers.
B. To prevent self-pollination and facilitate the production of hybrid seeds.
C. To increase the vegetative growth of the plant.
D. To create ornamental plants that do not produce pollen.

Question No. 5 Marks +1 -0 Time

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Which of the following is an example of using biotechnology for bioremediation in an agricultural context?

A. Using GM crops that produce their own pesticides.
B. Using microbes to break down pesticide residues in contaminated soil.
C. Using drones to apply fertilizer more precisely.
D. Using tissue culture to grow disease-free plants.

Question No. 6 Marks +1 -0 Time

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What is the main advantage of 'apomixis', or asexual reproduction through seeds, if it could be successfully engineered into crops?

A. It would allow for the propagation of hybrid vigor across generations.
B. It would increase the genetic diversity of the crop.
C. It would eliminate the need for watering the crops.
D. It would make all crops resistant to pests.

Question No. 7 Marks +1 -0 Time

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The CRISPR-Cas9 system, a recent breakthrough in biotechnology, is primarily used for:

A. Sequencing the entire genome of a plant.
B. Precisely editing genes within an organism's DNA.
C. Amplifying small amounts of DNA.
D. Identifying the location of genes on a chromosome.

Question No. 8 Marks +1 -0 Time

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Why are cyanobacteria (blue-green algae) considered important biofertilizers, particularly in rice paddies?

A. They produce natural herbicides that kill weeds.
B. They can fix atmospheric nitrogen, making it available to the rice plants.
C. They repel insect pests from the water.
D. They break down the tough outer layer of the rice grain.

Question No. 9 Marks +1 -0 Time

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What is a 'vaccine banana'?

A. A banana variety that is naturally immune to all diseases.
B. A term for bananas that are exceptionally rich in potassium.
C. A banana that has been genetically engineered to produce a vaccine protein.
D. A banana that is used as a natural remedy for the common cold.

Question No. 10 Marks +1 -0 Time

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How does biotechnology help in livestock diagnostics?

A. By creating new breeds of animals that are never sick.
B. By developing larger and stronger animals.
C. By providing rapid and accurate disease detection through techniques like ELISA and PCR.
D. By ensuring all animal feed is 100% organic.

Question No. 11 Marks +1 -0 Time

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The browning of cut apples and potatoes is caused by an enzyme called polyphenol oxidase (PPO). How has biotechnology been used to address this?

A. By developing a spray that deactivates the enzyme on the surface.
B. By using RNAi technology to 'silence' the gene that produces the PPO enzyme.
C. By breeding apples and potatoes with thicker skins.
D. By creating a new type of packaging that removes all oxygen.

Question No. 12 Marks +1 -0 Time

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What is a major limitation of traditional plant breeding that genetic modification can overcome?

A. It cannot create new varieties of crops.
B. It can only cross-breed closely related species.
C. It is a very fast process.
D. It cannot improve the yield of a crop.

Question No. 13 Marks +1 -0 Time

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What is the primary purpose of 'mycorrhiza' when used as a biofertilizer?

A. To fix atmospheric nitrogen in the soil.
B. To enhance the plant's uptake of phosphorus and other micronutrients.
C. To protect the plant from insect pests.
D. To induce flowering out of season.

Question No. 14 Marks +1 -0 Time

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The term 'substantial equivalence' is often used in the regulation of GM foods. What does it imply?

A. That the GM food is nutritionally and compositionally similar to its conventional counterpart.
B. That the GM food is genetically identical to its conventional counterpart.
C. That the GM food has been approved for sale in a substantial number of countries.
D. That the GM food provides a substantial benefit over its conventional counterpart.

Question No. 15 Marks +1 -0 Time

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Which of the following traits is an example of improving the 'processing quality' of a crop through biotechnology?

A. Developing potatoes with reduced acrylamide potential when fried.
B. Creating rice with higher vitamin A content.
C. Making cotton resistant to bollworms.
D. Developing wheat that can grow in colder climates.

Question No. 16 Marks +1 -0 Time

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What is a 'gene bank' or 'germplasm collection'?

A. A commercial company that sells GM seeds.
B. A facility where genetic material (seeds, tissues) from diverse plant varieties is stored for long-term conservation.
C. A database of all known plant genes.
D. A laboratory that specializes in gene synthesis.

Question No. 17 Marks +1 -0 Time

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How can biotechnology contribute to water conservation in agriculture?

A. By developing crops that can grow without any water.
B. By creating crops with improved drought tolerance and more efficient water use.
C. By inventing a new method for creating artificial rain.
D. By making the soil more compact to prevent water loss.

Question No. 18 Marks +1 -0 Time

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In the context of agriculture, what is a 'bio-stimulant'?

A. A substance or microorganism that, when applied to plants or soil, stimulates natural processes to enhance nutrient uptake and stress tolerance.
B. A powerful chemical pesticide that kills all living organisms in the soil.
C. A type of genetic modification that makes plants grow twice as fast.
D. An electronic device used to measure plant growth.

Question No. 19 Marks +1 -0 Time

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What is a potential negative impact of herbicide-tolerant crops on local ecosystems?

A. They increase the amount of biodiversity in the fields.
B. They can lead to an over-reliance on a single herbicide, potentially harming soil microbes and non-target plants.
C. They require more mechanical tillage, leading to soil erosion.
D. They attract a wider range of insect pests.

Question No. 20 Marks +1 -0 Time

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The production of insulin in genetically modified bacteria was a landmark achievement. How is this principle applied in 'pharming' with plants?

A. Plants are used to produce human pharmaceutical proteins, like antibodies or enzymes.
B. Plants are modified to be more nutritious, like medicines.
C. Plants are used to diagnose human diseases.
D. Plants are made resistant to human pathogens.

Question No. 21 Marks +1 -0 Time

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What is 'synthetic biology' and how might it be applied in future agriculture?

A. It is another term for organic farming.
B. It is the design and construction of new biological parts, devices, and systems that do not exist in the natural world.
C. It is the practice of cross-breeding different animal species.
D. It is the use of synthetic chemicals to stimulate plant growth.

Question No. 22 Marks +1 -0 Time

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Why is public engagement and transparent communication considered crucial for the success of agricultural biotechnology?

A. To ensure that only scientists can make decisions about the technology.
B. To build trust and help consumers make informed choices about their food.
C. To advertise GM products and increase sales.
D. To keep the technology secret from competing companies.

Question No. 23 Marks +1 -0 Time

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What is the role of 'molecular farming'?

A. Using molecules to directly fertilize plants.
B. The cultivation of crops at the molecular level.
C. The use of plants and animals to produce valuable molecules, particularly pharmaceuticals.
D. A type of farming that relies solely on chemical inputs.

Question No. 24 Marks +1 -0 Time

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What is a significant advantage of developing perennial grain crops, a long-term goal of some biotechnology and breeding programs?

A. They would need to be replanted every year.
B. They would reduce soil erosion and improve soil structure.
C. They would eliminate all crop diseases.
D. They would produce grain with a much higher protein content.

Question No. 25 Marks +1 -0 Time

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Which statement describes a key difference between genetic modification (GM) and selective breeding?

A. Selective breeding is a modern technique, while GM is an ancient practice.
B. GM allows for the transfer of genes between unrelated species, while selective breeding is limited to related species.
C. Selective breeding can create new genes, while GM can only rearrange existing ones.
D. GM is used for animals, while selective breeding is only for plants.

Question No. 26 Marks +1 -0 Time

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How does 'precision agriculture' utilize biotechnology?

A. It relies exclusively on traditional farming methods.
B. It integrates data from GPS, sensors, and drones with biotechnological tools like GM crops to manage fields on a micro-level.
C. It ensures that every plant in a field is genetically identical.
D. It uses chemicals to make crop growth more precise.

Question No. 27 Marks +1 -0 Time

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The development of 'climate-smart' or 'climate-resilient' crops aims to address which major challenge?

A. The increasing cost of agricultural machinery.
B. The predicted effects of climate change, such as increased drought, heat, and flooding.
C. The decreasing nutritional value of food.
D. The spread of invasive insect species.

Question No. 28 Marks +1 -0 Time

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What is the purpose of a 'reporter gene' in genetic engineering?

A. It is the primary gene that confers the desired trait.
B. It produces a visible or easily measurable signal, indicating that the gene transfer was successful.
C. It reports on the overall health of the plant.
D. It silences the expression of other genes.

Question No. 29 Marks +1 -0 Time

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How has biotechnology impacted the dairy industry?

A. It has eliminated the need for cows.
B. It has led to the production of recombinant bovine somatotropin (rBST) to increase milk yield.
C. It has made all dairy products lactose-free.
D. It has made traditional cheese-making obsolete.

Question No. 30 Marks +1 -0 Time

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What is a potential 'off-target' effect in the context of gene editing tools like CRISPR?

A. The tool successfully modifies the intended gene.
B. The tool modifies the gene in a different organism by mistake.
C. The tool accidentally modifies an unintended gene in the organism's DNA.
D. The tool fails to modify any gene at all.

Question No. 31 Marks +1 -0 Time

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The use of Sterile Insect Technique (SIT) is a form of biotechnological control. How does it work?

A. Insects are genetically modified to be sterile and then released to mate with wild populations.
B. A chemical spray is used that sterilizes all insects in a field.
C. A virus is introduced that causes sterility in the pest species.
D. Predatory insects that eat the pest's eggs are released.

Question No. 32 Marks +1 -0 Time

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What does the term 'nutrigenomics' refer to?

A. The study of how different nutrients can modify genes.
B. The scientific study of the interaction of nutrition and genes, especially with regard to the prevention or treatment of disease.
C. The exclusive use of nutritious GM foods in one's diet.
D. The practice of sequencing the genome of food crops.

Question No. 33 Marks +1 -0 Time

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What is a primary advantage of bioplastics derived from crops like corn or sugarcane?

A. They are stronger and more durable than traditional plastics.
B. They are typically biodegradable and reduce reliance on fossil fuels.
C. They are completely transparent and flavorless.
D. They can be produced with zero energy input.

Question No. 34 Marks +1 -0 Time

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In the context of food, what is the 'allergenicity' concern with GM crops?

A. That all GM crops are inherently more allergenic than non-GM crops.
B. That inserting a gene from a known allergenic source could make the recipient food allergenic.
C. That GM crops can cure food allergies.
D. That non-GM crops do not cause any allergies.

Question No. 35 Marks +1 -0 Time

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What is the 'precautionary principle' in the context of regulating GMOs?

A. The idea that GM crops should be approved quickly to prevent starvation.
B. The principle that if an action or policy has a suspected risk of causing harm, in the absence of scientific consensus, the burden of proof that it is not harmful falls on those taking the action.
C. The principle that farmers should take precautions by wearing protective gear when handling GM seeds.
D. The idea that GM technology is precise and therefore no precautions are needed.

Question No. 36 Marks +1 -0 Time

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How can plant tissue culture contribute to the conservation of endangered plant species?

A. By cross-breeding them with common crop plants.
B. By growing them in large-scale agricultural fields.
C. By using techniques like micropropagation to clone them and cryopreservation to store their germplasm.
D. By analyzing their DNA to understand why they are endangered.

Question No. 37 Marks +1 -0 Time

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What is a 'Plant Growth-Promoting Rhizobacteria' (PGPR)?

A. A bacterium that causes disease in plant roots.
B. A bacterium that lives in the soil and on or in plant roots, and enhances plant growth.
C. A type of genetically modified plant.
D. A chemical fertilizer that is applied to the roots.

Question No. 38 Marks +1 -0 Time

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Which statement accurately reflects the scientific consensus on the safety of currently approved GM foods?

A. Scientific and regulatory bodies have found no inherent difference in risk between currently approved GM foods and their conventional counterparts.
B. There is a major scientific debate with half of scientists believing they are unsafe.
C. All GM foods have been proven to cause long-term health issues.
D. The safety of GM foods has not been studied at all.

Question No. 39 Marks +1 -0 Time

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What is a 'secondary metabolite' in plants, which biotechnology can help produce?

A. A compound essential for basic plant survival, like chlorophyll.
B. A compound not directly involved in growth, but often used for defense, attracting pollinators, or as human medicine.
C. A byproduct of photosynthesis that is toxic to the plant.
D. The main structural component of the plant cell wall.

Question No. 40 Marks +1 -0 Time

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How does 'gene stacking' in crops work?

A. It involves physically stacking seeds on top of each other.
B. It is the process of combining multiple transgenic traits, like herbicide tolerance and insect resistance, into a single plant.
C. It refers to the way genes are arranged on a chromosome.
D. It is a method for increasing the height of crop plants.

Question No. 41 Marks +1 -0 Time

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What is the main purpose of 'genome mapping' in agricultural biotechnology?

A. To create a physical map of a farm.
B. To identify the location and function of genes on the chromosomes of an organism.
C. To map the movement of pests in a field.
D. To change the genome of an organism directly.

Question No. 42 Marks +1 -0 Time

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Why is reducing methane emissions from livestock a target for agricultural biotechnology?

A. Methane is a valuable gas that can be captured and sold.
B. Methane is a potent greenhouse gas that contributes to climate change.
C. Methane makes meat taste bad.
D. Methane is toxic to the animals that produce it.

Question No. 43 Marks +1 -0 Time

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What is a 'protocorm' in the context of orchid micropropagation?

A. The seed of an orchid.
B. A specialized root structure.
C. A small, undifferentiated mass of cells that develops from an orchid embryo and can be used to generate new plants.
D. The flower bud of an orchid.

Question No. 44 Marks +1 -0 Time

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The use of agricultural biomass (e.g., corn stover, switchgrass) to produce ethanol is an example of what biotechnological application?

A. Biofuel production
B. Biofortification
C. Bioremediation
D. Biocontrol

Question No. 45 Marks +1 -0 Time

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If a GM crop is designed to be resistant to a specific virus, how does it typically work?

A. The plant produces a strong chemical that kills the virus.
B. The plant's immune system is boosted by an external vaccine.
C. The plant is engineered to contain a piece of the virus's genetic material, which triggers a defense mechanism like RNA interference.
D. The plant develops a thick, waxy cuticle that the virus cannot penetrate.

Question No. 46 Marks +1 -0 Time

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What is a potential 'founder effect' concern in livestock breeding using techniques like AI and embryo transfer?

A. A rapid increase in the genetic diversity of the population.
B. A reduction in genetic diversity due to the overuse of a few 'elite' sires or dams.
C. The creation of animals that are founders of a new species.
D. The inability of the animals to found a new herd.

Question No. 47 Marks +1 -0 Time

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What is 'vertical farming' and how can biotechnology enhance it?

A. Farming on steep hillsides, where biotechnology helps prevent erosion.
B. Growing crops in vertically stacked layers, often indoors, where biotechnology can provide crops specifically adapted for these controlled environments.
C. A system where farmers are organized in a top-down hierarchy.
D. The practice of growing very tall plants like corn and sunflowers.

Question No. 48 Marks +1 -0 Time

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What does 'intellectual property rights' (IPR), such as patents, mean for agricultural biotechnology?

A. That farmers own the rights to all the seeds they purchase.
B. That companies can patent GM seeds and genes, requiring users to pay for them and adhere to certain conditions.
C. That all information about biotechnology must be freely available to the public.
D. That the intellectual achievements of farmers are formally recognized.

Question No. 49 Marks +1 -0 Time

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The term 'food security' involves more than just producing enough food. How can biotechnology address the 'utilization' aspect of food security?

A. By creating crops that can be grown anywhere in the world.
B. By increasing the yield of all staple crops by a fixed amount.
C. By enhancing the nutritional content (e.g., vitamins, minerals) of staple foods, ensuring the food consumed provides adequate nutrition.
D. By making food easier to transport long distances.

Question No. 50 Marks +1 -0 Time

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What is a 'knockout' animal in the context of biotechnology research?

A. An animal that has been rendered unconscious for a surgical procedure.
B. An animal that has won a competition.
C. An animal in which a specific gene has been inactivated or 'knocked out' to study its function.
D. An animal that is exceptionally strong and aggressive.

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