Here you can get Class 12 Important Questions Biology based on NCERT Text book for Class XII.Biology Class 12 Important Questions are very helpful to score high marks in board exams. They often overlook the fact that biodiversity is a decisive factor in the provision of ecosystem services. 1. The Red Data Book lists the endangered species of plants and animals . Due to mindless and unsustainable resource use, once productive forest and grasslands have been turned into deserts, and wastelands have increased all over the world. The number of species community depends upon the date of extinction. CBSE Class 10 Maths Questions and Answers, CBSE Class 10 Science Questions and Answers, the decline in number of population in course of time, abundance and quality of natural habitat and, Biology and potential value of the species. All types of ecosystems are showing rapid change. (adsbygoogle = window.adsbygoogle || []).push({}); Biodiversity is under serious threat due to human activities. It is based on the assumption thatThe organism will not move from marked transectAll organisms are in the straight lineAnimals on the line are seenOrganism lack any competition Page 5 of Environment & Biodiversity Current Affairs Questions (MCQs) for SSC, Banking / IBPS, UPSC, IAS, NTSE, CLAT, Railways, NDA, CDS, Judiciary, UPPSC, RPSC, GJPSC, MPSC, MPPSC and other states civil services / government job recruitment examinations of India. Professionals, Teachers, Students and Kids Trivia Quizzes to test your knowledge on the subject. Which threat to biodiversity is the number one cause of loss of biodiversity? Thus, to keep biodiversity and the environment in a healthy condition is a need of the day. The red list of threatened species prepared by IUCN  lists 132 species of plants and animals as Critically Endangered, the most threatened category from India. 1. Tags: Question 13 . Free PDF Download of CBSE Biology Multiple Choice Questions for Class 12 with Answers Chapter 15 Biodiversity and Conservation. Most concepts revolve mainly around attaching a monetary value to nature to determine how natural resources can be used to generate maximum revenue. Please click "NEXT" Button to Start the Ecology MCQ 07.. Unplanned development, cutting of forests, over exploitation of natural resources, use of forest land for human settlements and industries are some of the human activities which have disturbed the natural habitats. Threats to biodiversity includes habitat loss and fragmentation, over exploitation, pollution, introduction of non native species or exotic species, etc. Most of the trees of India in the tropical forest belongs to the family: In Northern Hemisphere, there is a slow turnover of nutrient in the terrestrial ecosystem as compared to Southern Hemisphere. III. Excessive withdrawal of water from wetlands, fishing, building of dams,jetties and canals have adversely affected the wetland ecosystems. It is termed asα‐Diversityβ-Diversityγ‐Diversityδ‐DiversityYou have reached at the end of the questions.Please Click 'SUBMIT' button to see your 'SCORE' and 'CORRECT ANSWERS' Tropical forests are losing 14000- 40000 species every year. Excessive exploitation of certain species by human beings have resulted in their extinction. Similarly, Lantana camara has invaded many forests in several parts of the country and it strongly competes with the inhabitants species. Download CBSE Class 12 Biology Biodiversity and Conservation MCQs Set B in pdf, Biology chapter wise Multiple Choice Questions free, Q.1. 7. Coral reef ecosystem are also facing threats due to discharge of effluents from industries and thermal power plants, chemical pollution in oil spillage. The main difference between the ‘Sixth extinction’ and the previous five extinctions is that, the sixth … Quiz competition or Quiz contest is one of the best ways to educate your employees, workers, and … Eichhornia and Lantana are two plants which strongly compete with the existing species. Which threat of biodiversity is the root cause of all other threats to biodiversity? Other rare species have become rare because of the interference of human or other unnatural forces. Southeast (SE) Asia holds high regional biodiversity and endemism levels but is also one of the world's most threatened regions. Man has begun to overuse or misuse most of these natural ecosystems. This Set Consists of 15 Questions. The range of animal and plant life in an ecosystem are being destroyed which is … Which of the above statements is/are correct. Biodiversity Test Online Questions and Answers Mcqs Because of unfavourable factors or human interference its natural regeneration is not able to keep pace with destruction or exploitation. ","error_messages":{"email":"Not a valid e-mail address! These questions can be used for the preparation of all the competitive examinations in Biology / Life Sciences such as CSIR JRF NET, ICMR JRF, DBT BET JRF, GATE and other University Ph.D Entrance Examinations. Type of biome in California and coastal regions of Mediterranean Sea is:TaigaSavannahChaparralsTropical deciduous forests For example, Nile Perch, an exotic predatory fish was introduced in the Victoria lake in South Africa. Be it water, air, or land pollution, all forms of pollution appear to be a threat to all life forms … Following are the important factors that can be attributed to the loss of species and ecosystem. Enter your e-mail address. 2. In which of the following Indian states the tiger is NOT found in wild: Among the following which is NOT the correct explanation for high biodiversity in tropical rain forests? Many countries have their own Red Data Book. Wildlife refers to (a) plants in water and on land (b) animals in the forests (c) living organism in their natural habitats (d) carnivorous animals such as lion, tiger etc Answer: (b) animals in the forests 2. The concept of ‘biodiversity hotspots’ originated from this organization. Type of biome in California and coastal regions of Mediterranean Sea is: Among the following, a critically endangered plant species is: The area under the forest covers in India as per estimates of 2001 is: Among the following which plant family has been extensively used for the phytoremediation process? These are the species which were earlier placed in one of the three above categories but which are now considered relatively secure because of the application of effective conservation methods. Overexploitation. Aceclofenac is a potential threat to vultures. Free PDF Download of CBSE Biology Multiple Choice Questions for Class 12 with Answers Chapter 15 Biodiversity and Conservation. Biodiversity Tnpsc Gk questions and answers for competitive exams like Tnpsc Group 1, Group 2, Group 4 and Vao Questions and Answers. As we move from one geographical region to next neighboring region, species diversity tends to change. Ecology MCQ on Wild Life and Biodiversity Conservation Part 2, Ecology MCQ on Community Ecology (Synecology Part 1), Ecology MCQ on Population Ecology (Autecology), Ecology MCQ on Air Pollution (for CSIR NET Life Science Examination), MCQ on Environmental Science with Answer Key. Fig: Threats to biodiversity (Habitat Loss). Get help with your Biodiversity homework. Unfortunately, biodiversity often takes a back seat when conservation measures are developed. Changes in climate throughout our planet's history have, of course, altered life on Earth in the long run — ecosystems have come and gone and species routinely go extinct.But rapid, manmade climate change speeds up the process, without affording ecosystems and species the time to adapt. Pollution. Various natural and human activities have made the habitats unsuitable for several species of plants and animals. 5. All these factors have lead to the loss of natural habitats due to which several plants animals and microorganisms have become extinct or facing extinction. Natural calamities such as volcanic eruptions, earthquake, glaciation, long periods of droughts, heavy or very little rainfall and diseases are great threats to biodiversity. Eichhornia or water hyacinth grows vigorously in lakes and ponds becoming a great threat to the underline plants and animals. 60 seconds . The most important reason for biodiversity loss in today’s age is (a) over-exploitation (b) co-extinctions (c) alien species invasions (d) … biodiversity loss are : 1. In Northern Hemisphere, there is a slow turnover of nutrient in the terrestrial ecosystem as compared to Southern Hemisphere. Oil spillage alone accounts for the death of 50000 to 250000 birds every year. It is based on the assumption that. 13. Population. Besides this agricultural run-offs containing pesticides and chemical fertilizers have increased the toxicity of lakes and ponds making them unfit for aquatic plants and animals. For instance, mangroves have been clea… The list includes 18 species of amphibians, 14 fishes and 10 mammals. Fig: Threats to biodiversity (Great Indian Bustard). The rare species have a population of less than 20,000 individuals. Which vertebrate group is more vulnerable to extinction?Options:(a) Birds (b) Amphibians(c) Mammals (d) FishesAnswer=BQ.2 From origin of life to its diversification on earth, there have occurred following number of episodes of mass Please Share with Your Friends... MCQ on Biodiversity and Conservation Part 1. Alien species invasions and 4. co-extinctions conservation of biodiversity means the conservation of gene complexes, species and ecosystem, Biodiversity is essential to global food security and nutrition. Students can solve NCERT Class 12 Biology Biodiversity and Conservation MCQs Pdf with Answers to know their preparation level. These are the taxa which fall into any one of the above three categories- endangered vulnerable and rare. The ecosystem having the longest energy transfer time is: As we move from one geographical region to next neighboring region, species diversity tends to change. The ecosystem having the longest energy transfer time is:Tropical rain forestOpen OceanDesertTemperate Deciduous forest Over hunting particularly illegal poaching, over collection remain a serious threat to species and significant cause for extinction of many species. This MCQ set consists of Ecology and Environmental Sciences Multiple Choice Questions from the topic Biodiversity and Conservation Part 1 with Answer Key. 12. Natural calamities such as volcanic eruptions, earthquakes etc., cause mass extinction. Please click "NEXT" Button to Start the Ecology MCQ 07.. You have reached at the end of the questions. A. Biodiversity And Conservation MCQs Let's see some important Biodiversity And Conservation MCQs. You have selected correct answer.","quick_result_wrong_answer_text":"Wrong! ","incorrect":"The entered text is not correct! Q. It results in complete loss of biodiversity of the region. They are under constant stress due to natural and human activities. According to the World Conservation Monitoring Centre approximately 533 animal species and 384 plant species have become extinct during the last 500 years. 1. Pollution. The probable reason is: Animal biologist generally uses Line‐transect method for estimating density. Marine Environment: Oceans play a vital role in the global environment. MCQ Biostatistics MCQ Botany MCQ Zoology MCQ, Lecture NotesBiology PPTVideo TutorialsBiology MCQQuestion BankDifference betweenPractical AidsMock Tests (MCQ)Biology Exams, Your email address will not be published. Welcome to Ecology MCQ-07 (Biodiversity). For example, rising ocean temperatures and diminishing Arctic sea ice affects marine biodiversity and can shift vegetation zones, having global i… answer choices . Biodiversity and its conservation Questions: MCQs Test - 01, Total Questions 15 Covering 70 per cent of the … Play this game to review Biology. The evolutionary history of earth shows that many species, which formed dominant flora and fauna during a geological period disappeared completely due to the changes in the habitat and climatic conditions. Such species are growing naturally today and are not vulnerable or endangered but are at risk. (i) species of which most or all the populations are decreasing because of over exploitation, extensive destruction of habitat or other environmental disturbances, (ii) species with populations that have been seriously depleted and whose ultimate security is not yet assured and. If a blue catfish is introduced and eats the large fish who eat the smaller fish, what will happen to the population of the smaller fish? Habitat loss and fragmentation 2. over-exploitation 3. Environment, Ecology & Biodiversity Multiple choice questions for GK paper in SSC, NDA, CDS, UPSC, UPPSC and State PSC Examinations. This MCQ set consists of Ecology and Environmental Sciences Multiple Choice Questions from the topic Biodiversity and Conservation of Nature Part 2 with Answer Key. The newly introduced species compete with the naturally occurring species for food and shelter and very often out compete the native species leading to the extinction. Extinction due to human activities is termed as anthropogenic extinction. Exotic species are foreign or alien species entering into a new geographical area. Department of Environment, Government of India, has published two volumes of Red Data Book listing 435 endangered species of plants. SURVEY . It is a natural process.

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