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. 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. If the same factor continues to operate as before the species is likely to extinct very soon. MCQs on Biodiversity : 1. 12. It is based on the assumption that. Rapid industrialization, urbanization, and growth in population have resulted in massive deforestation and consequential habitat loss around the world. Please Click 'SUBMIT' button to see your 'SCORE' and 'CORRECT ANSWERS', (adsbygoogle=window.adsbygoogle||[]).push({}). 3 only. Biodiversity Tnpsc Gk questions and answers for competitive exams like Tnpsc Group 1, Group 2, Group 4 and Vao Questions and Answers. The most important reason for biodiversity loss in today’s age is (a) over-exploitation (b) co-extinctions (c) alien species invasions (d) … Q. It lists plants grown in protected areas. Such species are growing naturally today and are not vulnerable or endangered but are at risk. Among the following which is NOT the correct explanation for high biodiversity in tropical rain forests?Long evolutionary timeMore surface areaHigh productivityMinimum competition Wular, Dal and Chilika lakes and wetlands of Andaman and Nicobar Islands have been seriously affected. 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? Southeast (SE) Asia holds high regional biodiversity and endemism levels but is also one of the world's most threatened regions. ","error_messages":{"email":"Not a valid e-mail address! Natural calamities such as volcanic eruptions, earthquake, glaciation, long periods of droughts, heavy or very little rainfall and diseases are great threats to biodiversity. 11. Plants or species whose population numbers are decreasing and likely to become severely threatened with time. (adsbygoogle = window.adsbygoogle || []).push({}); Biodiversity is under serious threat due to human activities. For instance, mangroves have been clea… Marine Environment: Oceans play a vital role in the global environment. Play this game to review Biology. Welcome to Ecology MCQ-08 (Biodiversity Conservation). In Northern Hemisphere, there is a slow turnover of nutrient in the terrestrial ecosystem as compared to Southern Hemisphere. Today, major loss to biodiversity in the world has been done by man. Biodiversity and its conservation Questions: MCQs Test - 01, Total Questions 15 Biology MCQs for Class 12 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. Among the following which group of animals has the maximum number of endangered and critically endangered species as per the IUCN Red List?AmphibianReptileMammalsAves 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. Biodiversity is fast depleting. 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! Biology Important Questions Class 12 are given below.. Biodiversity and Its Conservation Multiple Choice Questions and Answers 1. The probable reason is: Animal biologist generally uses Line‐transect method for estimating density. Here we have covered Important Questions on Biodiversity and Conservation for Class 12 Biology subject.. Biodiesel is obtained from:Jatropha curcusCalotropisProsopisCatharanthus The rare species have a population of less than 20,000 individuals. In which of the following Indian states the tiger is NOT found in wild:PunjabRajasthanUPArunachal Pradesh 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. 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 … This MCQ set consists of Ecology and Environmental Sciences Multiple Choice Questions from the topic Biodiversity and Conservation Part 1 with Answer Key. 1, 2 & 3. Fig: Threats to biodiversity (Habitat Loss). For example, rising ocean temperatures and diminishing Arctic sea ice affects marine biodiversity and can shift vegetation zones, having global i… Tags: Question 13 . As against Red Data Book there is a Green book. 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. Their place has been taken by new species which were successful in adapting themselves in the new changed environment. 3. For example, Nile Perch, an exotic predatory fish was introduced in the Victoria lake in South Africa. 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. 60 seconds . 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? Most of the trees of India in the tropical forest belongs to the family:ArecaceaeFabaceaeDipterocarpaceaeBromeliaceae 8. These are the taxa suspected of belonging to one of the first three categories but for which insufficient information is currently available. 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. 2. It is termed as. They often overlook the fact that biodiversity is a decisive factor in the provision of ecosystem services. ","empty":"Please complete all required fields! Biodiversity. Extinction due to human activities is termed as anthropogenic extinction. The conservation of biodiversity are of two types: 1. 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. These are the species or taxa facing extinction and whose survival is unlikely if the causal factors continue to operate. 10. Excessive exploitation of certain species by human beings have resulted in their extinction. 7. With the current rate of extinction, by the end of  21st century, earth may lose 50% of its species. 5. 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. As we move from one geographical region to next neighboring region, species diversity tends to change. The number of species community depends upon the date of extinction. It clogs rivers and lakes and threatens the survival of many aquatic species. Because of unfavourable factors or human interference its natural regeneration is not able to keep pace with destruction or exploitation. 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. These are the taxa which fall into any one of the above three categories- endangered vulnerable and rare. Be it water, air, or land pollution, all forms of pollution appear to be a threat to all life forms … Extinction means disappearance of species from any geographical region. Free PDF Download of CBSE Biology Multiple Choice Questions for Class 12 with Answers Chapter 15 Biodiversity and Conservation. Plants and animals living there die off gradually from lack of shelter and food to survive. And 10 mammals loss ) and its Conservation Multiple Choice Questions from the biodiversity! Equator which seems to be the result of the first three categories but for which insufficient information is currently.. 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