Class 12 Biology — Chapter 10: Biotechnology and its Applications
90 practice questions · 30 Easy · 30 Medium · 30 Hard
Practise Class 12 Biology Chapter 10, "Biotechnology and its Applications", with 90 NCERT-aligned multiple-choice questions. The set is split into 30 Easy, 30 Medium and 30 Hard questions, so you can warm up on the fundamentals and then push into the exam-level problems that separate top scorers in CBSE Board exams and NEET UG.
"Biotechnology and its Applications" is one of the chapters where diagram-based recall, terminology and NCERT line-by-line accuracy really pays off. Each MCQ on this chapter is timed and uses exam-grade marking (+2 correct, −1 wrong, 0 skipped), training the same accuracy-under-pressure that real papers demand. Every question carries a short explanation, so a wrong answer becomes a quick lesson rather than a dead end — the fastest way to close gaps before a test.
Use this chapter as targeted revision: attempt the Easy set first to confirm your basics on Biotechnology and its Applications, then move to Medium and Hard to test application and problem-solving. Your accuracy, streaks and XP save automatically, and the chapter feeds into your overall Class 12 Biology mastery score. A few sample questions are shown below; sign in free to practise all 90.
Key concepts: Biotechnology and its Applications (Class 12 Biology)
This chapter covers applications of biotechnology in agriculture, medicine and elsewhere, and the ethical issues such as biopiracy.
- Biotechnology in agriculture
- GM crops with improved traits, e.g. Bt cotton (pest resistance using Bacillus thuringiensis genes) and golden rice (vitamin A).
- RNA interference
- Used to make pest-resistant plants (e.g. against nematodes) by silencing specific genes.
- Biotechnology in medicine
- Recombinant insulin (humulin), gene therapy (e.g. for ADA deficiency), and molecular diagnosis (PCR, ELISA).
- Transgenic animals
- Animals with foreign genes used in research, producing useful proteins, and testing vaccines/medicines.
- Ethics & biopiracy
- Concerns over GMO safety and the exploitation of bio-resources/traditional knowledge without authorisation (biopiracy); GEAC regulates GMOs in India.
💡 Exam tips for Biotechnology and its Applications
- Bt toxin is harmless until activated in the alkaline gut of the insect — a favourite mechanism question.
- Recombinant human insulin (humulin) avoids the allergy problems of animal-extracted insulin.
Sample questions
Bt cotton resists:
Bt protein toxic to insects.
PCR is used in diagnostics for:
e.g., HIV, tuberculosis, COVID detection.
Golden rice is engineered to produce:
Combats Vitamin A deficiency.
Biotechnology and its Applications — FAQs
What are the key concepts in Class 12 Biology Biotechnology and its Applications?+
This chapter covers applications of biotechnology in agriculture, medicine and elsewhere, and the ethical issues such as biopiracy. Key ideas include Biotechnology in agriculture, RNA interference, Biotechnology in medicine, Transgenic animals, Ethics & biopiracy.
What does Class 12 Biology Chapter 10 (Biotechnology and its Applications) cover on XamBaaz?+
It covers 90 NCERT-aligned MCQs on "Biotechnology and its Applications" — 30 Easy, 30 Medium and 30 Hard — each with a timed quiz and an instant explanation, suitable for CBSE Board exams and NEET UG.
Are these "Biotechnology and its Applications" questions free to practise?+
Yes — sign in with Google to practise "Biotechnology and its Applications" free. Full unlimited access is ₹999/year (limited-time launch price), with no per-chapter charges.
How should I revise "Biotechnology and its Applications" for the exam?+
Start with the Easy quiz to confirm your fundamentals, then attempt Medium and Hard for application-level practice. Review each explanation, retry the questions you miss, and track your accuracy on this chapter until it is consistently high.
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