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NCERT Solutions for Class 12 Biology Chapter 13 - Biodiversity And Conservation

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NCERT Solutions for Class 12 Biology Chapter 13 - Biodiversity and Conservation

NCERT Solutions for Class 12 Chapter 13 Biodiversity and Conservation are available at Vedantu and can be used for free. A lot of questions are frequently asked in the Biology Class 12 board exams from this chapter. These questions are also asked in various competitive exams like JEE Mains and Advanced, NEET, etc. Download the NCERT Solution for Biology Chapter 13 now.

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Table of Content
1. NCERT Solutions for Class 12 Biology Chapter 13 - Biodiversity and Conservation
2. Access NCERT Solution for Class 12 Biology Chapter 13 - Biodiversity and Conversation
3. NCERT Solutions for Class 12 Biology Chapter 13 - Biodiversity and Conservation
    3.1NCERT Solutions for Class 12 Biology - Free PDF download
    3.2Chapter 13 Biodiversity and Conservation 
    3.3Benefits of NCERT Solutions for Class 12 Biology
    3.4How Would Study Materials from Vedantu Help the Students?
    3.5Access Other Chapters of NCERT Solutions for Class 12 Biology
    3.6Other Related Links
FAQs


Class:

NCERT Solutions for Class 12

Subject:

Class 12 Biology

Chapter Name:

Chapter 13 - Biodiversity And Conservation

Content-Type:

Text, Videos, Images and PDF Format

Academic Year:

2024-25

Medium:

English and Hindi

Available Materials:

  • Chapter Wise

  • Exercise Wise

Other Materials

  • Important Questions

  • Revision Notes



Biodiversity Chapter at a Glance - Class 12 NCERT Solutions


Biodiversity


Biodiversity

Competitive Exams after 12th Science
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Access NCERT Solution for Class 12 Biology Chapter 13 - Biodiversity and Conversation

1. Name the three important components of biodiversity.

Ans: Biodiversity consists of variability among life forms from all sources including land, air, and water. Three important components of biodiversity are:

  1. Genetic diversity

  2. Species diversity

  3. Ecosystem diversity


2. How do ecologists estimate the total number of species present in the world?

Ans: Ecologists calculated the total number of species present in the world using statistical comparison.

  • They compared the richness of insect groups in tropical and temperate regions.

  • They used these ratios to estimate the species richness of other groups of animals and plants.

  • The estimation made by researchers is that there are about seven million species on Earth.

  • This indicates that there is a vast variety of living organisms on our planet.


3. Give three hypotheses for explaining why tropics show greatest levels of species richness.

Ans: Scientists proposed three different hypotheses for explaining species richness within the tropics.

  1. More solar energy reaches tropical latitudes than temperate regions, which results in high productivity and high species diversity.

  2. In the tropical regions, less seasonal variation and a less constant environment are seen which helps in the promotion of high species richness.

  3. During the ice age, temperate regions were subjected to glaciations while tropical regions remained undisturbed which resulted in an increase in the species diversity in this region.


4. What is the significance of the slope of regression in a species-area relationship?

Ans: To find a species-area relationship, the slope of regression (z) has great significance. Thus, it provides an estimation of the species richness of the area. It is independent of taxonomic category or sort of area studied. In smaller areas, it has been found that where the species-area relationship is analyzed, the slope of regression is analogous no matter the taxonomic category or the region. However, when in larger areas, a similar analysis is completed, then the slope of regression is far steeper.


5. What are the major causes of species losses in a geographical region?

Ans: Species losses in geographical regions are the majority due to human activities. Thus, its causes are:

  1. Habitat loss and fragmentation.

  2. Over-exploitation

  3. Alien species invasions

  4. Co-extinction


6. How is biodiversity important for ecosystem functioning?

Ans: An ecosystem with high species diversity is more stable than an ecosystem with low species diversity.

  • High species diversity leads to greater productivity and resistance towards disturbances like alien species invasions and floods.

  • Biodiversity helps to maintain the ecological balance of an ecosystem.

  • All the trophic levels in an ecosystem are connected via food chains.

  • The death of any organism in a trophic level can disturb the entire food chain.

  • If an ecosystem is rich in species, there will be other food alternatives available at each trophic level, which might not allow an organism to die due to the absence of its food resource.

  • Biodiversity plays a crucial role in maintaining the health and ecological balance of an ecosystem.


7. What are sacred groves? What is their role in conservation?

Ans: Sacred groves are forest patches that are exhilarated around places of worship. In India, such groves are common and are found in Rajasthan, Western Ghats of Karnataka and Maharashtra, Meghalaya, and Madhya Pradesh.

Sacred groves provide protection of many rare, threatened, and endemic species of plants and animals found in an area. In this region, the process of deforestation is strictly prohibited by tribal communities. Thus, it is a rich biodiversity area. 


8. Among the ecosystem services are control of floods and soil erosion. How is this achieved by the biotic components of the ecosystem?

Ans: In an ecosystem, the biotic components consist of living organisms like plants and animals. A crucial role is played by plants in controlling floods and soil erosion. The soil particles are held together by the roots of plants, hence to avoid the erosion of the soil by wind or water, protection is provided. to the topsoil. The soil is also porous by the roots, thereby allowing groundwater infiltration and preventing floods.

Hence, prevention of soil erosion and natural calamities like floods and droughts. Thus, the fertility of soil and biodiversity increases.


9. The species diversity of plants (22 per cent) is much less than that of animals (72 per cent). What could be the explanations for how animals achieved greater diversification?

Ans: On the Earth, it is recorded that more than 70 percent of species are animals and only 22 percent of species are planted. A large difference is seen in their percentage. As in comparison to plants, animals have adapted themselves to ensure their survival in changing environments. In the case of insects and other animals. a complex nervous system is being developed by them to control and coordinate their body structure. Also, Insects are made versatile by their repeated body segments with paired appendages and external cuticles, and as compared to other life forms, they have been given the ability to survive in various habitats.


10. Can you think of a situation where we deliberately want to make a species extinct? How would you justify it?

Ans: Yes, there are parasites and disease-causing bacteria that we are working to eradicate from the earth. Hard work is done by the Scientists to fight against these microorganisms. as these are harmful to human beings.

Through the use of vaccinations, Scientists were able to eliminate the smallpox virus from the world. Thus, it can be concluded that we humans purposely want to make these species extinct. Several other eradication programs like polio and Hepatitis B vaccinations are aimed to eliminate these disease-causing microbes.


11. How to differentiate biodiversity and biodiversity conservation?

Ans: Biodiversity refers to the variety of living organisms in an ecosystem or on Earth. It includes diversity within species, between species and ecosystems. Biodiversity is essential for maintaining the ecological balance and provides us with various ecosystem services such as clean air, water, food and medicines.

Biodiversity conservation, on the other hand, refers to the protection, preservation, and management of the natural resources and biodiversity. It aims to conserve the natural habitats and ecosystems, endangered and threatened species, and genetic diversity.

In simple terms, biodiversity is the variety of life on Earth, while biodiversity conservation is the act of protecting and preserving that variety of life.


NCERT Solutions for Class 12 Biology Chapter 13 - Biodiversity and Conservation

NCERT Solutions for Class 12 Biology - Free PDF download

NCERT Solutions prepared by Vedantu’s expert and professional teachers will give you a complete understanding of all the questions of Chapter 13 Biodiversity and Conservation from Class 12 Biology subject. Solutions prepared by Vedantu will give you clarity about different topics from Biology Chapter 13 Biodiversity and Conservation of Class 12. Practising different types of questions will ensure that you have a clear understanding of the subject after learning Chapter 13 Biodiversity and Conservation. Free PDFs of NCERT Solutions are available here as well and can be downloaded free of charge for both online and offline use. Install the solutions now for NCERT.


Chapter 13 Biodiversity and Conservation 

Benefits of NCERT Solutions for Class 12 Biology

Expert and professional teachers at Vedantu are working round the clock for providing you with high-quality study materials. All the solutions are made in a well-structured manner in order to make your board exam preparation easier. 


  • Vedantu’s solutions are an important part of all the study material for Class 12 students.

  • It acts as a perfect reference guide for finding the correct NCERT Solutions. 

  • All the solutions are of high standard and quality.

  • Expert teachers frame all the NCERT Solutions.

  • All the solutions are available in PDF format for free download.

  • Use of simple and easy to understand terms. 

  • Crisp, to-the-point solutions.

  • All the solutions are prepared according to the CBSE latest guidelines.

  • All the solutions are precise and systematic such that it is not difficult for students to learn.


A lot of students are already taking benefits of NCERT Solutions provided by Vedantu, So what are you waiting for, download the PDF version of NCERT Solutions now.


How Would Study Materials from Vedantu Help the Students?

  • Vedantu study material is available for each class, including all subjects like mathematics, physics, biology, chemistry, etc.

  • The study material has been curated by subject experts to ensure quality.

  • All solutions are well-suited for learners and comply with the latest CBSE recommendations.

  • Each topic is explained systematically and supported with relevant research materials and test papers.

  • In-house professional teachers are available 24/7 to address any queries or concerns of learners.

  • Vedantu app can be downloaded to access the study material and get help from teachers anytime, anywhere.


Explore Study Materials for Class 12 Chapter 13 - Biodiversity and Conservation



Access Other Chapters of NCERT Solutions for Class 12 Biology



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FAQs on NCERT Solutions for Class 12 Biology Chapter 13 - Biodiversity And Conservation

1. What we are going to study in Chapter 13 of Biology Class 12?

Ans: The existence of various types of habitats, different species of organisms and their variations such as biotypes, ecotypes, and genes, adapted to different climates and conditions of different continents, including their interactions and processes, is biodiversity or biological diversity. The topics covered in this chapter are:

  1. Biodiversity

  2. Biodiversity Conservation

2. How can students access solutions for different chapters in one place?

Ans: Students can use any of the solutions by downloading the Vedantu app from the Play Store. It is available for download free of price. The app lets you access solutions anywhere and at any time. You will attend a free live masterclass by installing Vedantu’s app. Some of the students experience difficulties while learning biology, so with the help of our expert teachers, Vedantu has made the subject easier to understand. One of the essential aspects of Class 12 Biology study materials is our NCERT Solutions. In order to make your study easier for exams, our experienced and competent teachers have created these solutions with the greatest focus. Download the NCERT PDF solution, download the app from the Play Store and view the live master class, NCERT PDF solution, free videos and much more free of charge.

3. Why should I refer to the NCERT Solutions for Chapter 13 of Class 12 Biology?

Ans: NCERT solutions stick to the syllabus of CBSE Class 12, Biology, and offer on-point answers for all the solutions. Vedantu provides NCERT Solutions prepared by the experts for the benefit of the students. Students can practise the important questions designed by the experts at Vedantu to get well versed in this chapter. Download these solutions on the Vedantu website or the app for free of cost to prepare for the exams. These questions will help the students to secure a perfect score in the exams.

4. How can students differentiate between biodiversity and biodiversity conservation? How can Vedantu help students better understand the chapter and prepare for exams?

Ans: Topic: Chapter 13 of Class 12 Biology - Biodiversity

Main topics covered:

  • Types of biodiversity

  • Differentiation between biodiversity and biodiversity conservation

  • NCERT solutions

  • Important questions from an exam point of view

Vedantu offers:

  • Solutions to help students understand better

  • Free download of important questions PDF on Vedantu Website or app

  • Strong grip on the chapter for exam preparation

5. What are the important topics of NCERT Solutions For Class 12 Biology Chapter 13 biodiversity and conservation?

Ans: The important topics from this chapter are the importance of biodiversity and how it is displayed in our environment. However, all the topics of NCERT Solutions for Class 12 Biology are important in chapter 13. To secure a perfect score, the students should not omit any topic. Vedantu provides NCERT Solutions for Class 12 Biology, where the experts answer all the solutions in a crisp and simplified manner.

6. What is Biodiversity Class 12 NCERT?


Ans: Biodiversity stands for a variety of living things that live on the earth. It refers to all the species living in one region or ecosystem. To get a better definition and explanation on this topic, visit the Vedantu website where experts have crafted the NCERT Solutions for the benefit of the students. Download NCERT Solutions for all the chapters and start the exam preparations today.

7. Why are there so many species in Class 12 Biology?

Ans: According to Robert Mays, there are 7 billion species on earth.  High amount of  solar energy advances the  tropical latitudes than temperate regions, which results in high productivity and high species diversity. NCERT Solutions created by Vedantu offer solutions created by the experts, which will help the students understand the concepts well.  Students can practise the important questions designed by the experts at Vedantu to get well versed in this chapter. Download these solutions on the Vedantu website or the app for free of cost to prepare for the exams. These questions will help the students to secure a perfect score in the exams.

8. How is biodiversity important for ecosystem functioning?


Ans: Biodiversity provides ecological life support. It provides oxygen, clean water, and air to all the existing ecosystems. Humans’ livelihood depends on biodiversity, it provides raw materials for consumption and production. NCERT Solutions created by Vedantu provide solutions to help the students understand the concepts and ace the exams successfully. Visit the Vedantu website to download the free PDF and use the study material for revision.