Explain with the help of one example how | Class 12 Biology Chapter Biotechnology and its Application, Biotechnology and its Application NCERT Solutions

Current NCERT chapter

Academic session 2026-27, Chapter 10 in the current curriculum.

Welcome to the NCERT Solutions for Class 12 Biology - Chapter Biotechnology and its Application. This page offers a step-by-step solution to the specific question from Exercise 0, Question 6:

Explain with the help of one example how genetically modified plants can:
(a) Reduce usage of chemical pesticides
(b) Enhance nutritional value of food crops

. With detailed answers and explanations for each chapter, students can strengthen their understanding and prepare confidently for exams. Ideal for CBSE and other board students, this resource will simplify your study experience.

Question 6:

Explain with the help of one example how genetically modified plants can:
(a) Reduce usage of chemical pesticides
(b) Enhance nutritional value of food crops

Answer:

  1. Bt toxin has been used as the biological insecticide which is produced by the bacterium Bacillus thuringiensis which is a common soil bacteria which produces protein toxin which kills insects. Bt toxin gene has been cloned from the bacteria and been expressed in plants to provide resistant to insects without the insecticide and then creates the bio- pesticides. For example: Bt cotton, Bt corn, tomato, GM (genetically modified) tobacco with Bt gene, potato etc.
  2. There are some achievements of transgenic plants and improvement in Nutritional quality is one of them. Milled rice is the staple food for a large fraction of the world’s human population. This rice removes the husk and contains β- carotene. Beta- carotene is a precursor to Vitamin A. the synthesis of beta- carotene requires various enzyme catalysis steps. For example: Rice is extremely low in Vitamin A. Potrykus and Beyer developed genetically engineered rice named ‘Golden Rice’ (contains beta- carotene genes from daffodil plant) and is enriched in pro- vitamin A by introducing three genes for carotenoids involved in the biosynthetic pathway. β- Carotene, phytoene synthase (psy) and lycopene cyclase (lyc) were introduced, the combination of these three covers the requirements for β- carotene synthesis. But later found psy and crt I was alone able to drive the β- carotene synthesis. Deficiency of vitamin A causes blindness and the beta- carotene presence in golden rice prevents blindness in children.

Study Tips for Answering NCERT Questions:

NCERT questions are designed to test your understanding of the concepts and theories discussed in the chapter. Here are some tips to help you answer NCERT questions effectively:

  • Read the question carefully and focus on the core concept being asked.
  • Reference examples and data from the chapter when answering questions about Biotechnology and its Application.
  • Review previous year question papers to get an idea of how such questions may be framed in exams.
  • Practice answering questions within the time limit to improve your speed and accuracy.
  • Discuss your answers with your teachers or peers to get feedback and improve your understanding.

Latest Blog Posts

Stay updated with our latest educational content and study tips

How to Return to Work After a Career Break: Skills, Jobs and Preparation in 2026

It’s not about starting over if you took a break to care for children, take care of yourself, be healthy or for any other reason. This is a realistic strategy for the recovery of skills, selection of the right job, and overcoming the resume problem. One year, three years or 10 years of a career … Read more

Read More

Best Career Options After Class 12 for Average Students in 2026

There’s no need to score 95% or achieve a JEE/NEET rank. You don’t need to score 95% or rank in JEE/NEET to build a solid career. A candid and pragmatic guide to the routes that actually work for students who have an average mark and what to do when faced with the options. ​ If … Read more

Read More

Coaching vs Self-Study: Which is Best in 2026 for Competitive Exams?

AI tools, online platforms that are much cheaper than coaching centres and the changing idea of what “structure” even means have upended this argument more in the past two years than in the decade preceding it. Here’s what is really the case for 2026 – and what has actually stayed the same. If you look … Read more

Read More

Career Change After 30: How to Transition from Non-Tech to IT or Data Science

Starting to make a new career after 30 isn’t a start from scratch. Marketing, teaching, financial, retail, healthcare, sales and other professionals can pursue careers in technology by applying the existing knowledge and skills they have acquired to new technology skills. There are various ways to enter the technology industry, such as in IT support, … Read more

Read More
View All Blog Posts

Related Resources

Exam Information

Get detailed information about CBSE exams, patterns, and preparation tips

View Exam

Full Form

Learn about Full form significance

Explore

Calculator

Use our online calculator for quick calculations and problem solving

Use Calculator

Glossary

Browse our comprehensive glossary of important terms and definitions

View Glossary

Related Student Tools

Class-wise Resources

Explore more educational resources to enhance your learning experience

Class 12 Resources

Complete study resources for this class

Class 11 Resources

Complete study resources for this class

Class 10 Resources

Complete study resources for this class

Class 9 Resources

Complete study resources for this class

Class 8 Resources

Complete study resources for this class

Class 7 Resources

Complete study resources for this class

Class 6 Resources

Complete study resources for this class

Quick Access

NCERT Solutions Sample Papers Formulas Math Tables Calculators Study Blog

Add Comment

Welcome to the NCERT Solutions for Class 12 Biology - Chapter . This page offers a step-by-step solution to the specific question from Excercise 0 , Question 6: Explain with the help of one example how genetically modified plants can: (a) Reduce usage of chemi....

Students Also Read

Ask a Question
Keep learning

Discover More on SaralStudy

Explore all articles