Biotechnology and its Applications Chapter-Wise Test 11

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which of the following is incorrect about Bt crops?

Bt crops produce Cry proteins that are toxic to insect pests.
Bt crops are genetically engineered for pest resistance.
Bt crops naturally produce insecticidal proteins without genetic modification.
Bt crops reduce the need for chemical pesticides.
3

Bacillus thuringiensis (Bt) crops produce insecticidal proteins through genetic modification, not naturally.

Which component in tissue culture media provides energy to growing plant cells?

Vitamins
Amino acids
Sucrose
Mineral salts
3

Sucrose provides the energy required for the growth and development of plant cells in tissue culture media.

What is the significance of the Genetic Engineering Approval Committee (GEAC) in India?

Promoting organic farming
Approving GM research and applications
Managing biodiversity reserves
Regulating antibiotic use
2

The Genetic Engineering Approval Committee (GEAC) is responsible for approving and regulating genetic modification research and its applications in India.

Which of the following is incorrect about gene therapy?

Gene therapy can replace defective genes with functional ones.
Gene therapy is used to treat genetic disorders like ADA deficiency.
Gene therapy introduces genetic mutations intentionally.
Gene therapy can use viral vectors for gene transfer.
3

Gene therapy aims to correct defective genes, not introduce harmful genetic mutations.

Which Indian organization is responsible for the approval of GM research?

ICMR
GEAC
DBT
CSIR
2

Genetic Engineering Approval Committee (GEAC) regulates GM research and its applications in India.

What is the role of RNA interference (RNAi) in pest-resistant plants?

Enhances plant growth
Silences specific mRNA of the pest
Improves seed dormancy
Increases nutrient uptake
2

RNAi silences specific mRNA in pests, preventing the translation of essential proteins and causing pest death.

Which part of the plant is commonly used for producing virus-free plants through tissue culture?

Leaves
Meristem
Roots
Stems
2

Meristem tissues are used in tissue culture to produce virus-free plants as they are usually not infected by viruses.

Which of the following is a correct statement regarding tissue culture?

Tissue culture produces genetically diverse plants.
Tissue culture uses whole plants for propagation.
Tissue culture produces genetically identical plants through micropropagation.
Tissue culture is used only for flowering plants.
3

Tissue culture is a technique that produces genetically identical plants through micropropagation from a single plant cell or tissue.

Which transgenic animal was the first to produce human protein in milk?

Dolly the sheep
Rosie the cow
Oncomouse
GloFish
2

Rosie the transgenic cow produced milk containing human alpha-lactalbumin for infant nutrition.

Which of the following is incorrect regarding biopiracy?

Biopiracy refers to the exploitation of biological resources without authorization.
Biopiracy is legal and promoted for biodiversity conservation.
Basmati rice faced biopiracy by foreign companies.
The Biodiversity Act aims to prevent biopiracy.
2

Biopiracy is illegal and refers to the unauthorized exploitation of biological resources, not a practice promoted for biodiversity conservation.

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