9. Southeast (SE) Asia holds high regional biodiversity and endemism levels but is also one of the world's most threatened regions. Other rare species have become rare because of the interference of human or other unnatural forces. This MCQ set consists of Ecology and Environmental Sciences Multiple Choice Questions from the topic Biodiversity and Conservation Part 1 with Answer Key. Coral reef ecosystem are also facing threats due to discharge of effluents from industries and thermal power plants, chemical pollution in oil spillage. Examples of endangered species due to over collection are Madonna lily (Lilium candidum) of Europe, Saguaro cactus (Carnegiea gigantea) of North America, etc. Biology MCQs for Class 12 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. 13. Oil spillage alone accounts for the death of 50000 to 250000 birds every year. ","error_messages":{"email":"Not a valid e-mail address! It results in complete loss of biodiversity of the region. Biodiversity Test Online Questions and Answers Mcqs The main difference between the ‘Sixth extinction’ and the previous five extinctions is that, the sixth … All types of ecosystems are showing rapid change. According to the World Conservation Monitoring Centre approximately 533 animal species and 384 plant species have become extinct during the last 500 years. Threats to biodiversity includes habitat loss and fragmentation, over exploitation, pollution, introduction of non native species or exotic species, etc. International Union for Conservation of nature and natural resources (IUCN ) has identified rare species of plants and animals on the following basis: IUCN has recognised following categories on the basis given above: A species is considered endangered when its natural regeneration is not able to keep pace with exploitation or destruction by natural and unnatural means. 2. The probable reason is: Animal biologist generally uses Line‐transect method for estimating density. If the same factor continues to operate as before the species is likely to extinct very soon. These are the taxa suspected of belonging to one of the first three categories but for which insufficient information is currently available. For example, rising ocean temperatures and diminishing Arctic sea ice affects marine biodiversity and can shift vegetation zones, having global i… "},"first_page":!0}Time is Up!CancelSubmit Quiz. You have selected correct answer.","quick_result_wrong_answer_text":"Wrong! The concept of ‘biodiversity hotspots’ originated from this organization. You have selected wrong answer. Which threat to biodiversity is the number one cause of loss of biodiversity? 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. (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. 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' The number of species community depends upon the date of extinction. 3. MCQs on Biodiversity : 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. Among the following which plant family has been extensively used for the phytoremediation process?PoaceaeBrassicaceaeMalvaceaeAnnonaceae 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. It proved to be a great threat for the native small Cichlid fish which is endemic to this lake. IUCN has defined red data categories which specifies state of extinction process. 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 Threats to Biodiversity Biodiversity is under serious threat due to human activities. For instance, mangroves have been clea… SURVEY . Various natural and human activities have made the habitats unsuitable for several species of plants and animals. Most of the extinct animals are vertebrates and extinct plants are angiosperms. Invasive Species. After marking your answers, please click ‘SUBMIT‘ button to see your ‘SCORE‘ and ‘CORRECT ANSWERS‘. biodiversity loss are : 1. Biology MCQs for Class 12 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. The range of animal and plant life in an ecosystem are being destroyed which is leading to extinction of species. Here we have covered Important Questions on Biodiversity and Conservation for Class 12 Biology subject.. Most of the trees of India in the tropical forest belongs to the family:ArecaceaeFabaceaeDipterocarpaceaeBromeliaceae Pollution, urbanisation, deforestation, mining, cultivation, drying out wetlands, etc., are all ways to destroy a natural area. Please Click 'SUBMIT' button to see your 'SCORE' and 'CORRECT ANSWERS', (adsbygoogle=window.adsbygoogle||[]).push({}). Man has begun to overuse or misuse most of these natural ecosystems. Overexploitation. Be it water, air, or land pollution, all forms of pollution appear to be a threat to all life forms … window.qmn_quiz_data["79"]={"quiz_id":"79","quiz_name":"Ecology MCQ 07","disable_answer":"0","ajax_show_correct":"0","progress_bar":"0","contact_info_location":"0","qpages":{"1":{"id":"1","quizID":"79","pagekey":"5fb901f369ec5","hide_prevbtn":"0"},"3":{"id":"3","quizID":"79","pagekey":"Fx8h4Nju","hide_prevbtn":"0"},"2":{"id":"2","quizID":"79","pagekey":"Vip7yMrY","hide_prevbtn":"0"}},"skip_validation_time_expire":"1","timer_limit_val":0,"disable_scroll_next_previous_click":"0","enable_result_after_timer_end":"0","enable_quick_result_mc":"0","enable_quick_correct_answer_info":"0","quick_result_correct_answer_text":"Correct! This Set Consists of 15 Questions. The most important reason for biodiversity loss in today’s age is (a) over-exploitation (b) co-extinctions (c) alien species invasions (d) … Thus, to keep biodiversity and the environment in a healthy condition is a need of the day. 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? In Northern Hemisphere, there is a slow turnover of nutrient in the terrestrial ecosystem as compared to Southern Hemisphere. These are the species with fever individuals. 1, 2 & 3. This MCQ set consists of Ecology and Environmental Sciences Multiple Choice Questions from the topic Biodiversity and Conservation Part 1 with Answer Key. 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. Dear Students, The ecosystem having the longest energy transfer time is:Tropical rain forestOpen OceanDesertTemperate Deciduous forest Excessive exploitation of certain species by human beings have resulted in their extinction. 3 only. Which of the above statements is/are correct. 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). Human domination is the greatest common thread of biodiversity because it takes advantage of his power and consumes all type of resources by endangering the life of other species. Q. Exotic species are foreign or alien species entering into a new geographical area. Please click "NEXT" Button to Start the Ecology MCQ 07.. You have reached at the end of the questions. Habitat loss and fragmentation 2. over-exploitation 3. Similarly, Lantana camara has invaded many forests in several parts of the country and it strongly competes with the inhabitants species. 1 only. The probable reason is:Plants are not good in the uptake of nutrients in the northern hemisphereTemperature is low which is not suitable for nutrient recyclingHigh rainfall in the southern hemisphereSoil is nutrient deficient in the northern hemisphere 60 seconds . Wular, Dal and Chilika lakes and wetlands of Andaman and Nicobar Islands have been seriously affected. Natural calamities such as volcanic eruptions, earthquakes etc., cause mass extinction. The main difference between the ‘Sixth extinction’ and the previous five extinctions is that, the sixth … Pollution affects the stability of ecosystem resulting in the reduction of biodiversity. Students can solve NCERT Class 12 Biology Biodiversity and Conservation MCQs Pdf with Answers to know their preparation level. The conservation of biodiversity are of two types: 1. Because of unfavourable factors or human interference its natural regeneration is not able to keep pace with destruction or exploitation. Most concepts revolve mainly around attaching a monetary value to nature to determine how natural resources can be used to generate maximum revenue. These are the taxa which fall into any one of the above three categories- endangered vulnerable and rare. 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. 1. ","empty":"Please complete all required fields! Pollution. These activities are the cause of mortality of many species. 11. The human population requires resources to survive and grow, and those resources are … Welcome to Ecology MCQ-07 (Biodiversity). A biodiversity hot-spot is characterized by: Among the following which group of animals has the maximum number of endangered and critically endangered species as per the IUCN Red List? Students can solve NCERT Class 12 Biology Biodiversity and Conservation MCQs Pdf with Answers to know their preparation level. Their place has been taken by new species which were successful in adapting themselves in the new changed environment. It identifies the sites known/ referred to as ‘Important Bird and Biodiversity Areas’. Your email address will not be published. With the current rate of extinction, by the end of  21st century, earth may lose 50% of its species. For example, Nile Perch, an exotic predatory fish was introduced in the Victoria lake in South Africa. 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. Biodiversity And Conservation MCQs Let's see some important Biodiversity And Conservation MCQs. Free PDF Download of CBSE Biology Multiple Choice Questions for Class 12 with Answers Chapter 15 Biodiversity and Conservation. Department of Environment, Government of India, has published two volumes of Red Data Book listing 435 endangered species of plants. Among the following which is NOT the correct explanation for high biodiversity in tropical rain forests?Long evolutionary timeMore surface areaHigh productivityMinimum competition Tags: Question 13 . Download CBSE Class 12 Biology Biodiversity and Conservation MCQs Set B in pdf, Biology chapter wise Multiple Choice Questions free, Q.1. Eichhornia or water hyacinth grows vigorously in lakes and ponds becoming a great threat to the underline plants and animals. The list includes 18 species of amphibians, 14 fishes and 10 mammals. A biodiversity hot-spot is characterized by:Endemic plantsEndemic flowering plantsSpecies of flowering plantsThreat perception 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? Which of the following … Following are the important factors that can be attributed to the loss of species and ecosystem. Extinction due to human activities is termed as anthropogenic extinction. 1. A. Biodiversity And Conservation MCQs Let's see some important Biodiversity And Conservation MCQs. 14. Please Share with Your Friends... MCQ on Biodiversity and Conservation Part 1. Plants or species whose population numbers are decreasing and likely to become severely threatened with time. Biodiesel is obtained from:Jatropha curcusCalotropisProsopisCatharanthus It is based on the assumption that. Biodiversity and its conservation Questions: MCQs Test - 01, Total Questions 15 ","incorrect":"The entered text is not correct! answer choices . 1. Professionals, Teachers, Students and Kids Trivia Quizzes to test your knowledge on the subject. 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. 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. Among the following which group of animals has the maximum number of endangered and critically endangered species as per the IUCN Red List?AmphibianReptileMammalsAves The range of animal and plant life in an ecosystem are being destroyed which is … Terrestrial biodiversity tends to be greater near the equator which seems to be the result of the warm climate and high primary productivity. As we move from one geographical region to next neighboring region, species diversity tends to change. Biodiversity. ","number":"This field must be a number! Many countries have their own Red Data Book. Botanical Survey of India has a Green book  which has a list of hundreds of rare plants . 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. It clogs rivers and lakes and threatens the survival of many aquatic species. The area under the forest covers in India as per estimates of 2001 is:708,273 square km12.7 square km20.6 X 10 square km1666 square km Natural calamities such as volcanic eruptions, earthquake, glaciation, long periods of droughts, heavy or very little rainfall and diseases are great threats to biodiversity. The Red Data Book lists the endangered species of plants and animals . They are under constant stress due to natural and human activities. Human beings are entitled to a healthy and productive life in harmony with nature. Marine Environment: Oceans play a vital role in the global environment. Environment, Ecology & Biodiversity Multiple choice questions for GK paper in SSC, NDA, CDS, UPSC, UPPSC and State PSC Examinations III. Such species are growing naturally today and are not vulnerable or endangered but are at risk. It lists plants grown in protected areas. Population. (adsbygoogle = window.adsbygoogle || []).push({}); Biodiversity is under serious threat due to human activities. Over hunting particularly illegal poaching, over collection remain a serious threat to species and significant cause for extinction of many species. Eichhornia and Lantana are two plants which strongly compete with the existing species. 8. 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. Please feel free to inform the Admin if you find any mistakes in the answer key.. Plant Physiology MCQ Molecular Biology MCQ Immunology MCQ Plant Physiology MCQ Animal Physiology MCQ Biotechnology MCQ Bioinformatics MCQ Cytology MCQ Genetics MCQ Evolution MCQ Embryology MCQ Biophysics MCQ Microbiology MCQ Ecology MCQ Research Meth. Some are naturally rare and are able to maintain much small number. The solved questions answers in this Test: Biodiversity And Its Conservation (Level 1) quiz give you a good mix of … 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. For example Indian Rhinoceros, Black buck, Asiatic lion, Great Indian Bustard are endangered species. (iii) taxa with populations that are still abundant but are under threat from serious adverse factors throughout their range. These are the species or taxa facing extinction and whose survival is unlikely if the causal factors continue to operate. Threats to Biodiversity The core threat to biodiversity on the planet, and therefore a threat to human welfare, is the combination of human population growth and resource exploitation. Extinction means disappearance of species from any geographical region. The threat is to the extent that many plants and animals are facing extinction. 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. As against Red Data Book there is a Green book. Free PDF Download of CBSE Biology Multiple Choice Questions for Class 12 with Answers Chapter 15 Biodiversity and Conservation. Animal biologist generally uses Line‐transect method for estimating density. Access the answers to hundreds of Biodiversity questions that are explained in a way that's easy for you to understand. 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? Enter your e-mail address. Among the following, a critically endangered plant species is:Dipterocarpus nilgirinsesisSaraca indicaCupressus cashmerianaTerminalia arjuna Biodiversity is fast depleting. 12. Fig: Threats to biodiversity (Great Indian Bustard). if(window.qmn_quiz_data===undefined){window.qmn_quiz_data=new Object()}This Set Consists of 15 Questions. 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. Climate change and pollution from chemical contaminants certainly posses a further threat to species and ecosystems. Welcome to Ecology MCQ-07 (Biodiversity). Excessive withdrawal of water from wetlands, fishing, building of dams,jetties and canals have adversely affected the wetland ecosystems. The answer key is prepared with best of our knowledge. 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. Welcome to Ecology MCQ-08 (Biodiversity Conservation). 15. Biodiversity typically measures variation at the genetic, the species and the ecosystem level. Consider the following assumptions: (1) All known living organisms have parasites(2) A single host species can harbor more than one type of parasites(3) Parasites are species specificFrom the above information, it could be concluded that:Species of host organism is more than parasitesSpecies of parasites is more than host organismsNumber of parasites is equal to the number of hostsNo valid conclusion can be drawn 6. Please click "NEXT" Button to Start the Ecology MCQ 07.. MCQ quiz on Biodiversity multiple choice questions and answers on biodiversity MCQ questions quiz on biodiversity objectives questions with answer test pdf. 10. 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 It is termed as. Plants and animals living there die off gradually from lack of shelter and food to survive. Get help with your Biodiversity homework. Tropical forests are losing 14000- 40000 species every year. They can represent the category of endangered species if unfavourable conditions in the environment continue to operate. Unfortunately, biodiversity often takes a back seat when conservation measures are developed. Which threat of biodiversity is the root cause of all other threats to biodiversity? Terrestrial land, lakes, marshes, rivers and wetlands in the country are threatened by domestic pollution from sewage, industrial pollutants and toxic effluents. Species with small world population are termed as rare species. 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. Aceclofenac is a potential threat to vultures. The reduction of large areas rich in biodiversity into small pockets due to the establishment of agricultural fields, roads and other developmental projects play vital role in loss the of biodiversity. Quiz competition or Quiz contest is one of the best ways to educate your employees, workers, and … The rare species have a population of less than 20,000 individuals. Covering 70 per cent of the … Multiple Choice Questions This contains 90 Multiple Choice Questions for NEET Test: Biodiversity And Its Conservation (Level 1) (mcq) to study with solutions a complete question bank. Environment, Ecology & Biodiversity Multiple choice questions for GK paper in SSC, NDA, CDS, UPSC, UPPSC and State PSC Examinations. 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