NCERT Class 12 Biology Chapter 13 Biodiversity and Conservation MCQs & PYQ

In NCERT Class 12 Biology Chapter 13, titled "Biodiversity and Conservation", students are introduced to the concept of biodiversity and its significance in maintaining ecological balance. The chapter covers the different levels of biodiversity (genetic, species, and ecosystem diversity), the importance of conservation, and the threats to biodiversity. Students also learn about the methods of conservation, including in-situ and ex-situ conservation, and various conservation strategies used globally. The role of biodiversity in ecosystem functioning, human health, and sustainable development is also discussed in detail.

This article provides a comprehensive resource for exam preparation. It includes sample MCQs and subjective questions for CBSE and CUET, alongside downloadable PDFs of Class 12 Biology Chapter 13 MCQs and previous year questions for detailed practice of NCERT Class 12 Biodiversity and Conservation.

NCERT Class 12 Biology Chapters
Chapter 1: Sexual Reproduction in Flowering Plants	Chapter 2: Human Reproduction
Chapter 3: Reproductive Health	Chapter 4: Principles of Inheritance and Variation
Chapter 5: Molecular Basis of Inheritance	Chapter 6: Evolution
Chapter 7: Human Health and Disease	Chapter 8: Microbes in Human Welfare
Chapter 9: Biotechnology: Principles and Processes	Chapter 10: Biotechnology and its Applications
Chapter 11: Organisms and Populations	Chapter 12: Ecosystem

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Class 12 Biology Chapter 13 MCQs

This question bank includes previous years' CUET and CBSE MCQs, along with questions curated by subject experts. Below are 5 sample multiple-choice questions (MCQs) for Class 12 Biology Chapter 13: Biodiversity and Conservation. For the full set of 50 questions, download the PDF using the link provided below.

1.	Which forest also known as the ‘lungs of the planet earth’? (a) Amazon rain forest (b) Rain forest of north – east India (c) Tiaga forest (d) Tundra forest
2.	Species – area relationship in South American jungles was studied by– (a) Alexander von Humboldt (b) Paul Ehrlich (c) Robert May (d) David Tilman
3.	Extinction of Steller’s sea Cow and passenger pigeon is due to __________. (a) Invasion of alien species (b) Over exploitation by human (c) Habitat loss and fragmentation (d) Co – extinction
4.	Which of the following is not an alien species in India? (a) Water hyacinth (b) Elephant Grass (c) Carrot Grass (d) Lantana
5.	‘Terror of Bengal’ is another name of: (a) Solanum tuberosum (b) Eichhornia crassipes (c) Algal bloom (d) Oryza sativa

Class 12 Biology Chapter 13 Subjective Questions Without Solutions

This question bank includes previous years' CBSE subjective questions (2 marks and above) without solutions, along with expert-curated questions. Below are 5 sample subjective questions for Class 12 Biology Chapter 13: Biodiversity and Conservation. To access all questions, download the PDF from the link provided below.

1.	Analyse the effects of ‘Alien species invasion’ on the biodiversity of a given area. Provide two examples. (CBSE 2019, 3M)
2.	Illustrate with the help of an example how introduction of an alien species turns invasive and causes decline of an indigenous species. (CBSE 2023, 2M)
3.	“Stability of community depends upon its species richness.” How did David Tilman show this experimentally? (CBSE 2022, 2M)
4.	Give your interpretation of the message given by ecologist Paul Ehrlich through his analogy “rivet popper hypothesis” to human race. (CBSE 2022, 2M)
5.	Study the given graphs (X) and (Y) depicting the annual variation in solar radiation on Earth from January to December and answer the under mentioned questions. (i) Identify the graph that depicts (I) tropical region, and (II) temperate region, respectively. (ii) Which of the two regions, (X) or (Y), will show high biological diversity and why? Give two reasons. (CBSE 2022, 2M)

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Science Subjects Table

Sub Areas of Chapter 13: Biodiversity and Conservation

Chapter Name	Sub Topics
Biodiversity and Conservation	13.1 Introduction
	13.2 Levels of Biodiversity
	13.3 Importance of Biodiversity
	13.4 Loss of Biodiversity and Threats to Biodiversity
	13.5 Conservation of Biodiversity
	13.6 In-situ and Ex-situ Conservation
	13.7 Biodiversity Hotspots
	13.8 Role of Government and NGOs in Conservation

Review of NCERT Class 12 Biology Chapter 13

In NCERT Class 12 Biology Chapter 13, "Biodiversity and Conservation," students explore the importance of biodiversity for the health of ecosystems and human well-being. The chapter covers different levels of biodiversity—genetic, species, and ecosystem diversity—and highlights the significance of conserving biodiversity. It discusses the causes of biodiversity loss, such as habitat destruction and climate change, and introduces methods of conservation, including in-situ and ex-situ strategies. Students also learn about biodiversity hotspots and the crucial role of conservation efforts led by both government and non-government organizations.

Mastery of this chapter is essential for understanding how the loss of biodiversity affects the environment and society. By practicing MCQs and subjective questions, students can strengthen their understanding of the need for biodiversity conservation and its practical applications.

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