Genetic Engineering & Cropping Systems in Horticulture (Cropping Pattern, Crop Rotation)
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Question No. 1 Marks +1 -0 Time
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Which of the following organisms is most commonly used as a vector for transferring genes into horticultural crops to create genetically modified varieties?
Question No. 2 Marks +1 -0 Time
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Bt brinjal (eggplant) was genetically engineered primarily to provide resistance against which specific pest?
Question No. 3 Marks +1 -0 Time
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Which of the following cropping systems involves growing two or more crops simultaneously on the same field, but in distinct rows?
Question No. 4 Marks +1 -0 Time
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Golden Rice, a genetically modified rice variety, was developed to address the deficiency of which essential nutrient?
Question No. 5 Marks +1 -0 Time
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Consider the following statements regarding the benefits of crop rotation in horticultural systems:

1. It helps in breaking the life cycles of specific pests and diseases.
2. It contributes to the build-up of soil organic matter.
3. It reduces the need for nitrogenous fertilizers if legumes are included in the rotation.

Which of the statements given above are correct?
Question No. 6 Marks +1 -0 Time
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Which genetic engineering technique involves the precise editing of specific DNA sequences in an organism's genome, often referred to as 'molecular scissors'?
Question No. 7 Marks +1 -0 Time
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In the context of cropping patterns, 'ratooning' is a practice primarily observed in which of the following horticultural crops?
Question No. 8 Marks +1 -0 Time
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Which of the following is a potential application of genetic engineering in fruits and vegetables aimed at extending their shelf life?
Question No. 9 Marks +1 -0 Time
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Match the following cropping systems with their definitions:

A. Cropping SystemB. Definition
1. Monocroppingi. Growing two or more crops in rapid succession on the same land within one year.
2. Multiple Croppingii. Growing only one crop repeatedly on the same land year after year.
3. Sequential Croppingiii. Growing two or more crops on the same field in a single growing season.

Choose the correct matching:
Question No. 10 Marks +1 -0 Time
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In genetic engineering, the 'reporter gene' is used to:
Question No. 11 Marks +1 -0 Time
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Which of the following is NOT a direct benefit of incorporating legumes into a horticultural crop rotation system?
Question No. 12 Marks +1 -0 Time
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A cropping pattern where one crop is planted after the previous crop has reached its reproductive stage but before it is harvested, is known as:
Question No. 13 Marks +1 -0 Time
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Which gene, often derived from the bacterium Bacillus thuringiensis, is commonly incorporated into horticultural crops to confer insect resistance?
Question No. 14 Marks +1 -0 Time
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Consider the following statements regarding genetically modified (GM) horticultural crops:

1. GM crops can be developed with enhanced nutritional value.
2. Herbicide tolerance is a common trait engineered into some GM horticultural crops.
3. All GM crops are resistant to every type of pest and disease.

Which of the statements given above is/are correct?
Question No. 15 Marks +1 -0 Time
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Which of the following is an example of a perennial cropping pattern?
Question No. 16 Marks +1 -0 Time
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The primary goal of developing 'flavour-saver' tomatoes through genetic engineering was to:
Question No. 17 Marks +1 -0 Time
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Arrange the following steps in a typical gene transfer process into a plant cell using Agrobacterium tumefaciens, in chronological order:

1. Introduction of recombinant plasmid into Agrobacterium.
2. Co-cultivation of plant explants with transformed Agrobacterium.
3. Isolation of desired gene and insertion into a Ti plasmid.
4. Selection and regeneration of transformed plant cells.
Question No. 18 Marks +1 -0 Time
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Which cropping pattern aims to maximize yield per unit area per unit time by growing more than one crop in a year from the same field?
Question No. 19 Marks +1 -0 Time
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A major concern often raised about genetically modified horticultural crops is the potential for gene flow to wild relatives. This phenomenon is known as:
Question No. 20 Marks +1 -0 Time
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Which of the following is an advantage of crop rotation over monocropping in terms of soil nutrient management?
Question No. 21 Marks +1 -0 Time
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Match the following genetic engineering tools/concepts with their primary function:

A. Tool/ConceptB. Primary Function
1. Plasmidi. Enzyme for cutting DNA at specific sites.
2. Restriction Endonucleaseii. Small, circular DNA molecule used as a vector.
3. Transgenic Organismiii. An organism containing DNA from another species.

Choose the correct matching:
Question No. 22 Marks +1 -0 Time
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A farmer plants cucumber after harvesting a crop of beans. This is an example of:
Question No. 23 Marks +1 -0 Time
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Which of the following traits in a horticultural crop would typically require genetic engineering for its introduction, rather than conventional breeding methods?
Question No. 24 Marks +1 -0 Time
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Which cropping system is generally considered unsustainable in the long term due to its tendency to deplete specific nutrients and increase pest/disease pressure?
Question No. 25 Marks +1 -0 Time
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The 'terminator technology' in genetically engineered crops refers to a genetic modification that:
Question No. 26 Marks +1 -0 Time
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What is the primary benefit of including a green manure crop, such as sunnhemp or dhaincha, in a horticultural crop rotation?
Question No. 27 Marks +1 -0 Time
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In the context of genetic engineering in horticulture, what does 'RNA interference' (RNAi) primarily achieve?
Question No. 28 Marks +1 -0 Time
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Which of the following is an example of a physiological trait in horticultural crops that can be modified through genetic engineering?

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