Introduction to Biotechnology — Maharashtra (SSC) Class 9 Science Solutions (Free)

Free step-by-step Maharashtra (SSC) Class 9 Science solutions for "Introduction to Biotechnology" — important questions with detailed answers, download PDF for board exam preparation.

Introduction to Biotechnology — Maharashtra (SSC) Class 9 Science Solutions (Free)

Free step-by-step Maharashtra (SSC) Class 9 Science solutions for "Introduction to Biotechnology" — important questions with detailed answers, download PDF for board exam preparation.

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Introduction to Biotechnology — Textbook Questions Answered (6)

Q1: Define biotechnology. What are its main fields of application?

Biotechnology is the use of living organisms or their products to solve practical problems and produce useful substances. Main fields: Agricultural biotechnology (improved crops), Medical biotechnology (vaccines, medicines), Industrial biotechnology (fermentation), Environmental biotechnology (biofuels, waste treatment).

Q2: What is genetic engineering? Give one example of a genetically modified organism.

Genetic engineering is the process of introducing foreign DNA into an organism to impart new traits. Example: Bt cotton has a gene from the bacterium Bacillus thuringiensis inserted into its genome, making it resistant to cotton pests, reducing pesticide use.

Q3: Explain the application of biotechnology in medicine.

Biotechnology produces insulin for diabetes treatment using genetically engineered bacteria. It develops vaccines for diseases like polio and COVID-19. Gene therapy treats genetic disorders by replacing defective genes. Monoclonal antibodies help diagnose and treat cancer and autoimmune diseases.

Q4: What is fermentation? Name one industrial application.

Fermentation is an anaerobic process where microorganisms break down glucose to produce useful products without oxygen. Industrial application: Production of yogurt - lactic acid bacteria ferment milk lactose, producing lactic acid that curdles milk, creating yogurt with increased shelf life.

Q5: How is biotechnology used in agriculture?

Biotechnology creates disease-resistant varieties and increased-yield crops through selective breeding and genetic modification. Examples: Golden rice enriched with vitamin A, drought-resistant wheat varieties, pest-resistant crops. This improves food security and reduces crop losses.

Q6: What are the ethical concerns related to biotechnology?

Ethical concerns include: Unknown long-term effects of GMOs on human health and ecosystems. Intellectual property issues and patent laws restricting farmer access to seeds. Environmental risks of gene flow to wild plants. Safety regulations and labeling requirements for genetically modified foods.

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