Q. Which of the following is a method of in-situ conservation? (2019)
A.
Botanical gardens
B.
Seed banks
C.
Wildlife sanctuaries
D.
Zoos
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Solution
Wildlife sanctuaries are a method of in-situ conservation as they protect species in their natural habitats.
Correct Answer:
C
— Wildlife sanctuaries
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Q. Which of the following is a method of preserving food using microbes? (2022)
A.
Canning
B.
Freezing
C.
Fermentation
D.
Drying
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Solution
Fermentation is a method of preserving food by using microbes to produce acids or alcohol that inhibit spoilage.
Correct Answer:
C
— Fermentation
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Q. Which of the following is a method of preventing the spread of infectious diseases? (2022)
A.
Vaccination
B.
Eating healthy
C.
Drinking water
D.
Exercising
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Solution
Vaccination is a key method for preventing the spread of infectious diseases by building immunity.
Correct Answer:
A
— Vaccination
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Q. Which of the following is a method of producing insulin using biotechnology? (2018)
A.
Fermentation
B.
Hybridization
C.
Cloning
D.
Cross-breeding
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Solution
Insulin is produced using fermentation processes involving genetically modified bacteria.
Correct Answer:
A
— Fermentation
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Q. Which of the following is a method of using microbes for waste treatment? (2023)
A.
Incineration
B.
Composting
C.
Landfilling
D.
Chemical treatment
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Solution
Composting utilizes microbes to decompose organic waste into nutrient-rich compost.
Correct Answer:
B
— Composting
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Q. Which of the following is a method of using microbes to clean up the environment? (2023)
A.
Bioremediation
B.
Vaccination
C.
Pasteurization
D.
Fermentation
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Solution
Bioremediation is the process of using microbes to clean up contaminated environments.
Correct Answer:
A
— Bioremediation
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Q. Which of the following is a method of vegetative propagation? (2023)
A.
Cutting
B.
Budding
C.
Binary fission
D.
All of the above
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Solution
Cutting is a method of vegetative propagation where a part of the plant is cut and planted to grow a new plant.
Correct Answer:
A
— Cutting
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Q. Which of the following is a method of water transport in plants?
A.
Cohesion
B.
Adhesion
C.
Both cohesion and adhesion
D.
None of the above
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Solution
Both cohesion (water molecules sticking to each other) and adhesion (water molecules sticking to other surfaces) are important for water transport in plants.
Correct Answer:
C
— Both cohesion and adhesion
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Q. Which of the following is a method to reduce carbon footprint? (2020)
A.
Using fossil fuels
B.
Increasing energy efficiency
C.
Deforestation
D.
Burning waste
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Solution
Increasing energy efficiency helps to reduce carbon emissions and thus lowers the carbon footprint.
Correct Answer:
B
— Increasing energy efficiency
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Q. Which of the following is a method used for cloning in biotechnology? (2019)
A.
Somatic cell nuclear transfer
B.
Polymerase chain reaction
C.
Gel electrophoresis
D.
DNA sequencing
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Solution
Somatic cell nuclear transfer is a method used for cloning, where the nucleus of a somatic cell is transferred to an egg cell.
Correct Answer:
A
— Somatic cell nuclear transfer
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Q. Which of the following is a method used for cloning in plants? (2022)
A.
Micropropagation
B.
Electroporation
C.
Transfection
D.
PCR
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Solution
Micropropagation is a method used for cloning plants by growing them from small tissue samples in a controlled environment.
Correct Answer:
A
— Micropropagation
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Q. Which of the following is a method used for gene cloning? (2023)
A.
PCR
B.
Gel electrophoresis
C.
DNA sequencing
D.
All of the above
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Solution
PCR (Polymerase Chain Reaction) is a method used for amplifying DNA, which is essential in gene cloning.
Correct Answer:
A
— PCR
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Q. Which of the following is a method used for gene editing? (2021)
A.
PCR
B.
CRISPR-Cas9
C.
Gel electrophoresis
D.
DNA sequencing
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Solution
CRISPR-Cas9 is a revolutionary gene editing technology that allows for precise modifications to DNA.
Correct Answer:
B
— CRISPR-Cas9
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Q. Which of the following is a method used for gene transfer in plants? (2021)
A.
Microinjection
B.
Electroporation
C.
Agrobacterium-mediated transformation
D.
All of the above
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Solution
Agrobacterium-mediated transformation is a widely used method for transferring genes into plant cells, making it a key technique in plant biotechnology.
Correct Answer:
C
— Agrobacterium-mediated transformation
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Q. Which of the following is a method used for the production of genetically modified organisms? (2023)
A.
Polymerase chain reaction
B.
Microinjection
C.
Gel electrophoresis
D.
Cloning
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Solution
Microinjection is a method used to introduce foreign DNA into the cells of an organism, facilitating the creation of genetically modified organisms.
Correct Answer:
B
— Microinjection
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Q. Which of the following is a method used for the production of insulin? (2022)
A.
Fermentation
B.
Transcription
C.
Translation
D.
Photosynthesis
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Solution
Insulin is produced using fermentation processes involving genetically modified bacteria that express the insulin gene.
Correct Answer:
A
— Fermentation
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Q. Which of the following is a method used for the production of monoclonal antibodies? (2022)
A.
Hybridoma technology
B.
Gene cloning
C.
PCR
D.
DNA sequencing
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Solution
Hybridoma technology is the method used for the production of monoclonal antibodies by fusing myeloma cells with specific immune cells.
Correct Answer:
A
— Hybridoma technology
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Q. Which of the following is a method used for the production of transgenic animals? (2023)
A.
Microinjection
B.
Electroporation
C.
Gene gun
D.
All of the above
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Solution
Microinjection, electroporation, and gene gun techniques are all methods used to produce transgenic animals.
Correct Answer:
D
— All of the above
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Q. Which of the following is a method used in gene therapy? (2023)
A.
CRISPR-Cas9
B.
Polymerase chain reaction
C.
Gel electrophoresis
D.
DNA sequencing
Show solution
Solution
CRISPR-Cas9 is a revolutionary method used for gene editing and is a key tool in gene therapy.
Correct Answer:
A
— CRISPR-Cas9
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Q. Which of the following is a method used in the production of genetically modified crops? (2020)
A.
Polymerase chain reaction
B.
Microinjection
C.
Electrophoresis
D.
Chromatography
Show solution
Solution
Microinjection is a method used to introduce foreign DNA into plant cells to create genetically modified crops.
Correct Answer:
B
— Microinjection
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Q. Which of the following is a method used in the production of insulin? (2018)
A.
Fermentation
B.
Photosynthesis
C.
Transcription
D.
Translation
Show solution
Solution
Insulin is produced using fermentation processes involving genetically modified bacteria that can synthesize insulin.
Correct Answer:
A
— Fermentation
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Q. Which of the following is a micronutrient? (2022)
A.
Calcium
B.
Magnesium
C.
Copper
D.
Nitrogen
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Solution
Copper is classified as a micronutrient, required in trace amounts for plant growth and development.
Correct Answer:
C
— Copper
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Q. Which of the following is a modified leaf in flowering plants? (2020)
A.
Stamen
B.
Petal
C.
Sepal
D.
Bract
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Solution
Bracts are modified leaves that can be found associated with flowers.
Correct Answer:
D
— Bract
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Q. Which of the following is a modified leaf that forms part of the flower? (2022)
A.
Bract
B.
Node
C.
Internode
D.
Petiole
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Solution
A bract is a modified leaf that can be found at the base of a flower or inflorescence.
Correct Answer:
A
— Bract
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Q. Which of the following is a modified stem? (2019)
A.
Tuber
B.
Rhizome
C.
Bulb
D.
All of the above
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Solution
All of the options listed (tuber, rhizome, and bulb) are examples of modified stems.
Correct Answer:
D
— All of the above
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Q. Which of the following is a multicellular organism? (2021)
A.
Amoeba
B.
Paramecium
C.
Hydra
D.
Bacteria
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Solution
Hydra is a multicellular organism, while the others are unicellular.
Correct Answer:
C
— Hydra
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Q. Which of the following is a natural source of omega-3 fatty acids? (2023)
A.
Flaxseed oil
B.
Coconut oil
C.
Palm oil
D.
Corn oil
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Solution
Flaxseed oil is a rich natural source of omega-3 fatty acids, beneficial for heart health.
Correct Answer:
A
— Flaxseed oil
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Q. Which of the following is a non-cellular living entity? (2023)
A.
Bacteria
B.
Fungi
C.
Virus
D.
Protozoa
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Solution
Viruses are non-cellular entities that require a host cell to replicate.
Correct Answer:
C
— Virus
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Q. Which of the following is a non-communicable disease? (2022)
A.
Influenza
B.
Diabetes
C.
Hepatitis
D.
Tuberculosis
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Solution
Diabetes is classified as a non-communicable disease.
Correct Answer:
B
— Diabetes
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Q. Which of the following is a non-flowering plant? (2020)
A.
Rose
B.
Pine
C.
Sunflower
D.
Tulip
Show solution
Solution
Pine trees are gymnosperms and are considered non-flowering plants as they do not produce flowers.
Correct Answer:
B
— Pine
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