NCERT Solutions for Class 12 Biology Chapter 15 Biodiversity and Conservation
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Your search for NCERT solutions for class 12 biology chapter 15 biodiversity and conservation ends here. The NCERT Solutions for Class 12 are offered so that students can benefit the most and learn without hassle. According to a survey, more than 1.5 million species have been recorded in the world, but there might be nearly 6 million species on earth that are waiting to be discovered and named which is a very big thing. The total sum of diversity that exists at all levels of biological organization is referred to be as biodiversity. In solutions for NCERT Class 12 Biology solutions chapter 15 biodiversity and conservation, you will get questions from the diversity of species. Of the named species, more than 70 per cent are animals, out of which maximum are insects. The interesting thing which you will learn is that the group Fungi has more species than all the other vertebrate species. If you are looking for the answers of any other class from 6-12 then NCERT solutions are there for you.
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NCERT Solutions for Class 12 Biology Chapter 15 Biodiversity and Conservation: Solutions for biodiversity and conservation NCERT have all the answers to topic wise questions which are asked in the middle of the chapter. Species diversity on earth is not uniformly distributed but shows interesting patterns. In biodiversity and conservation class 12 NCERT solutions, you will also learn species richness which is also a function of the area of a region; the species-area relationship is generally a rectangular hyperbolic function. In case, you have any doubts or queries in solving these questions then biodiversity and conservation NCERT pdf will help you to solve them. We have thorough solutions to every chapter of the NCERT Solutions for Class 12 Biology, which have been updated to the CBSE Syllabus 2022–23.
Also Read,
NCERT Exemplar for class 12 biology chapter 15 biodiversity and conservation
NCERT Solutions for Class 12 Biology Chapter 15 Biodiversity and Conservation: Solved Exercise Questions:
Q1. Name the three important components of biodiversity.
Answer:
Biodiversity refers to the vast variety present among the various life forms. The three components of biodiversity are
1. Genetic diversity
2. Species diversity
3. Ecosystem diversity
Answer:
In order to estimate the number of species present on earth, ecologists statistically compare species richness of well-studied group of insects of tropical and temperate regions and these ratios are extrapolated with other groups of plants and animals to estimate the species richness found on Earth. As per estimates, about 7 million species are present on Earth.
Q3. Give three hypotheses for explaining why tropics show greatest levels of species richness.
Answer:
Tropics show the greatest level of species richness due to the following reasons (hypotheses)
1. The climate of tropical areas is more stable as compared to temperate areas. So the local populations, continuously live in the absence of natural disturbances.
2. Tropical communities are highly productive and can support a wide range of other species. This is mainly because tropics receive more solar energy.
3. In tropics, there is warm temperature and high humidity. Such conditions are favourable for a number of varieties of fungi, plants and algae.
Q4. What is the significance of the slope of regression in a species – area relationship?
Answer:
The slope of regression has a major role in determining the species-area relationship. In smaller areas slope of regression is similar regardless of the taxonomic group or region. On the other hands, in case of larger areas, curve us steeper. Biodiversity also increases from higher to lower altitudes.
Q5. What are the major causes of species losses in a geographical region?
Answer:
The major causes of species losses in a geographical region are as follows;
1. Habitat loss and fragmentation
2. Over-exploitation
3. Alien species invasion\
4. Co-extinction
Q6. How is biodiversity important for ecosystem functioning?
Answer:
Importance of biodiversity in ecosystem functioning
1. Biodiversity is important for maintaining stability, productivity, resilience, alternative pathways and overall health of a particular ecosystem.
2. A scientist named David Tilman confirmed that higher the biodiversity higher will be the productivity of the ecosystem as more plants are there to photosynthesize and more decomposers are there to recycle the waste of the ecosystem. He also proved that if biodiversity of an area is high than a year to year variation in total biomass will be lesser contributing to the overall stability of an ecosystem.
3. Rich biodiversity provides resilience against natural as well as man-made disturbances.
4. To clarify the importance of rich biodiversity on ecosystem functioning, River Popper hypothesis was proposed by Paul Ehrlich. He cited that the way in an aeroplane all parts are joined by thousands of rivets, in an ecosystem all components are joined by species. As more and more rivets are removed the parts of aeroplane disassemble. Similarly, as species are removed the functioning of the ecosystem also gets affected.
Q7. What are sacred groves? What is their role in conservation?
Answer:
Sacred groves are the traditionally protected patches of forests around places of worship where local tribal communities actively participate to protect these regions and do not allow to cut even a single branch of the tree because of religious reasons. Sacred groves in India are found in Western Ghats of Karnataka, Maharashtra, Khasi and Jaintia hills in Meghalaya, Aravali hills in Rajasthan and Sarguja, Chanda and Bastar areas of Madhya Pradesh.
Role of sacred groves on the conservation of biodiversity
1. Sacred groves help in the protection of a number of rare, endangered and endemic species.
2. In these regions, deforestation is strictly prohibited and thus they are biodiversity-rich areas.
Answer:
Ecosystem services refer to good or benefits that we get from the ecosystem. Prevention of soil erosion and floods comes under benefits provided by the ecosystem to us. The ecosystem includes both abiotic and biotic components. The biotic components are the living organisms present in an ecosystem. Biotic components play a role in providing ecosystem services. some of these roles are as follows:
1. The roots of plants hold the soil particles very tightly. This prevents the erosion or degradation of the top layer of soil
2. Plants increase soil fertility and biodiversity.
3. Presence of plants also help in controlling the flow of floods and lead to minimal destructions.
4. roots of plants make the soil porous thus allowing water to seep in the soil.
5. The carbon dioxide and oxygen balance are maintained in the ecosystem via plants and animals.
Answer:
Animals have achieved greater diversification than animals due to following reasons:
1. Animals possess a nervous system to receive stimuli and show a response against them.
2. Animals are motile and they can avoid competition thus leading to greater diversification.
3. Animals are subjected to less seasonal variations as compared to plants.
Plants are fixed and they require more evolutionary adaptations in order to obtain their requirements of water, minerals, sunlight, avoiding of herbivory etc. Thus, there is higher diversity among animals than plants.
Answer:
Yes, some harmful pathogens i.e. disease-causing organisms with little or no role in the ecosystem can be made to get extinct. Their extinction will not lead to any effect on the ecological balance. These pathogens may include smallpox virus etc, Poliovirus is about to get eradicated. There are efforts to make this world free from diseases such as TB, AIDA, Malaria etc. Since the microorganisms causing these disease have no role to play in the environment, they can be made to get eradicated.
NCERT Solutions for Class 12- Subject wise
NCERT Solutions for Class 12 Biology Chapter 15 – Biodiversity and Its Conservation
Biodiversity and conservation class 12 NCERT solutions have given a detailed explanation to each answer of the exercise. Biodiversity NCERT conservation is of two types, it can be in situ as well as ex-situ. In in-situ conservation is that conservation in which the endangered species are protected in their natural habitat so that the entire ecosystem can be protected. Whereas, Ex-situ conservation methods include protective maintenance of threatened species in zoological parks and botanical gardens, in vitro fertilization, tissue culture propagation and cryopreservation of gametes.
After going through the CBSE NCERT solutions for class 12 biology chapter 15 biodiversity and conservation, you will be able to understand all the answers and the questions given in biodiversity and conservation NCERT pdf.
And if still, you have any doubt or problem in getting the correct answers then NCERT solutions for biodiversity ncert will help you. But don't forget to try biodiversity ncert at least once, so that you can answer those questions by yourself then check your answers with the help of solutions for NCERT class 12 biology chapter 15 biodiversity and conservation given in biodiversity and conservation NCERT pdf.
Also, try to attempt all the given questions in biodiversity NCERT, and in case, if you have any doubt then refer to biodiversity and conservation NCERT pdf. There you will get all the answers to this chapter and it will help you to score good marks not only in 12th board exam as well as also in other competitive exams like NEET.
NCERT Solutions for Class 12 Biology Chapter 15 – The CBSE Syllabus 2022–23 includes a unit on ecology that covers biodiversity and its conservation. The following chapters make up the ecology unit:
Organisms and Population
Ecosystem
Biodiversity and Its Conservation
Environmental Issues
According to recent exam trends, the Unit - Ecology is worth 14 marks overall. Thus, it is necessary for students to thoroughly understand all concepts and to practice using NCERT Solutions, sample papers and previous year's questions. In order to quickly understand difficult concepts, students can use the NCERT Solutions for Class 12 Biology Chapter 15 as a quick reference.
Important Topics of NCERT Solutions for Class 12 Biology Chapter 15 Biodiversity and Conservation:
The important topics of Biodiversity NCERT are given below:
15.1 Biodiversity
15.1.1 How Many Species are there on Earth and How Many in India?
15.1.2 Patterns of Biodiversity
15.1.3 The importance of Species Diversity to the Ecosystem
15.1.4 Loss of Biodiversity
15.2 Biodiversity Conservation
15.2.1 Why Should We Conserve Biodiversity?
15.2.2 How do we conserve Biodiversity?
Highlights of NCERT Solutions Class 12 Biology Chapter 15 – Biodiversity and Its Conservation
The key features of the CBSE NCERT solutions for class 12 biology chapter 15 are given below:
- biodiversity and conservation NCERT solutions are written in the best possible way using simple language that makes solutions easier to read and understand
- In biodiversity and conservation class 12 NCERT solutions, points are used to frame answers to help understand quickly.
- Solutions content for biodiversity NCERT is derived from the textbook by the subject expert.
- Solutions in biodiversity and conservation class 12 NCERT pdf are as per the latest CBSE Syllabus and guidelines.
- biodiversity NCERT pdf links are readily available and easily accessible for free.
- Important topics are listed in the ecosystem pdf NCERT.
- The biodiversity and conservation class 12 NCERT pdf will also help you to prepare for your competitive exams like the NEET
- biodiversity and conservation NCERT pdf will also help you in your 12th board exam.
NCERT Exemplar Class 12 Solutions
Also Check NCERT Books and NCERT Syllabus here:
- NCERT Books Class 12 Biology
- NCERT Syllabus Class 12 Biology
- NCERT Books Class 12
- NCERT Syllabus Class 12
NCERT Solutions for Class 12 Biology- Chapter wise
Chapter 1 | |
Chapter 2 | |
Chapter 3 | |
Chapter 4 | |
Chapter 5 | |
Chapter 6 | |
Chapter 7 | |
Chapter 8 | |
Chapter 9 | |
Chapter 10 | |
Chapter 11 | |
Chapter 12 | |
Chapter 13 | |
Chapter 14 | |
Chapter 15 | Biodiversity and Conservation |
Chapter 16 |
Frequently Asked Question (FAQs) - NCERT Solutions for Class 12 Biology Chapter 15 Biodiversity and Conservation
Question: How to score well in Chapter 15 of NCERT Solutions for Class 12 Biology?
Answer:
The NCERT Solutions for Class 12 Biology Chapter 15 lay a solid foundation for the fundamental ideas covered in the chapter. Based on the most recent CBSE marking criteria and weighting, the solutions provided by expert faculty are precise. Students will learn more about the ideas that are crucial for the board exams by consulting these solutions. Students are better able to remember the concepts when they receive precise answers in a systematic format.
Question: What are the role of sacred groves on the conservation of biodiversity?
Answer:
1. Sacred groves help in the protection of a number of rare, endangered and endemic species.
2. In these regions, deforestation is strictly prohibited and thus they are biodiversity-rich areas.
Question: Why you should use NCERT solutions for class 12 biology chapter 15 biodiversity and conservation?
Answer:
- NCERT is the base of your learning.
- You will get all the answers biodiversity ncert and it will help you to score good marks in the exam.
- CBSE NCERT solutions for class 12 biology chapter 15 biodiversity and conservation will also help you with competitive exams like NEET.
- NCERT solutions for class 12 biology chapter 15 biodiversity and conservation will also help you in your 12th board exam.
- Biodiversity and conservation ncert will also boost your knowledge.
- To score well in the examination, follow the NCERT syllabus and solve the exercise given in the NCERT Book. To practice more problems, students must refer to NCERT Exemplar.
Question: What are the three main components of biodiversity ncert?
Answer:
The three main components of biodiversity ncert are:
1. Genetic diversity
2. Species diversity
3. Ecosystem diversity
Question: What are the important topics of NCERT solutions for class 12 biology chapter 15 biodiversity and conservation?
Answer:
- Biodiversity NCERT
- How Many Species are there on Earth and How Many in India?
- Patterns of Biodiversity
- The importance of Species Diversity to the Ecosystem
- Loss of Biodiversity
- Biodiversity Conservation
- Why Should We Conserve Biodiversity?
- How do we conserve Biodiversity?
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I have got 91.5 percent in board 2020-21. Now bits pilani is giving direct admission to board toppers and first rank holders . Am i eligible for that? please check and inform me
Hi.
To be eligible for admission in BITS Pilani under the 'Direct admission to Board toppers' scheme, the candidate should be the topper from the science stream having taken Physics, Chemistry, Mathematics subjects in 12th. To identify the topper, the following criteria will be adopted.
Since you got 91.5 percent, which is a very good percentage, you will not be deemed as topper due to the missing 8.5% and there are students with percentage higher than yours. Therefore, if you wish to get admission in BITS Pilani then it will be through BITSAT.
Good Luck
Answer laterI got 88.6% in cbse class 12th.Will I get admission in B.Sc at DU?
Hello student,
Hope you are in good health, so the answer to your question is as follows:-
First of all please get registered to delhi university admissions and fill the application fees.
Then try to calculate your best 4 according to the course .
As you have not mentioned which category you belong to , I am assuming you to be a general category student. So ,suppose if your best four came out to be somewhere like 89 , so if I see the last years cutoff for every BSC course the last cutoff comes out to be 89 , 87 where you can get bsc home science and bsc life science according to last year cutoff , but it always the chance of matter every year , cutoff always surprise us so you have to look every cutoff and when you find that you are getting the cutoff for that particular course do visit immediately to that college with all the correct papers and do the admission right away .
For further details you can go through the following link:-
https://university.careers360.com/articles/du-cutoff
Hope this helps!
i have got 76.4% in cbse class 12th boards 2021.can i get admission in good college of du for ba hons pol science? if yes what are the possible colleges for me?
Hello there!
Hope you are doing fine.
For admission in BA political science, you have to calculate your best of four aggregates.
If your best of four aggregates are coming less than 80% and unfortunately you may have problem in getting admission in any good colleges of DU.
However, it may happen that you may get admission in 4th to 6th cut off lists.
There is some relaxation category wise.
Check previous year cut off lists for clear idea.
Also, you can check your chances of getting admission in desired college of DU by clicking the link below:
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Stay safe.
Best wishes.
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Yes, assuming you are from General Category, with a great academic record in school, having a 7.5+ GPA from an Old IIT, having a CAT Percentile Score of 99.7+ you have fair chances in securing a Call from atleast 3 of the Top 6 IIMs, IIM ABCLKI.
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