Give an account of energy flow in an ecosystem. Ecologists can estimate the total number of species on Earth through a statistical comparison between species richness of a well-studied group of insects of tropical and temperate regions. As we all know, various trophic levels are connected through food chains. Sacred groves are referred to the tracts of forests that are restored in the places of worship. What is their role in conservation? Habitat loss and fragmentation â uncontrolled and unsustainable human activities such as slash, deforestation, mining, burn agriculture and urbanization causes habitats of different entities to be destructed or altered. Scientists are working extensively to fight and wipe them out completely as these microbes are harmful to human existence and have been successful in eliminating smallpox from the Earth through the successful use of vaccination which shows how humans deliberately want to make these species extinct. Candidates who are ambitious to qualify the Class 12 with good score can check this article for Notes. For instance, the extinction of host would cause the extinction of parasites. Some other programmes aiming at eradication are for Hepatitis B, polio vaccinations etc to eliminate those microbes that cause diseases. Thus, sacred groves are a rich region. Plant roots cause the soil to be porous enabling groundwater infiltration and averting floods. The chapter discusses the three components of biodiversity â genetic, species and ecosystem biodiversity. For instance â animals and insects have grown to develop a complex nervous system for coordinated and controlled body movements. How is biodiversity important for ecosystem functioning? led to the extinction of more than two hundred species of native fish in the lake. Question 1: Name the three important components of biodiversity. What is triple fusion? Therefore, it can be concluded that if an ecosystem is rich in species, then there will be other food alternatives at each trophic level which would not allow any organism to die due to the absence of their food resource. Diagrams provided are clear and self-explanatory, NCERT solutions are available to download for free in pdf format. Name the structures formed at the end of these two events. was last updated on 2nd December 2020 NCERT Chapter Class 12 Chapter 15 "Biodiversity And Conservation":-Ecology" Biology Quick Revision Series for NEET/AIIMS by Beats for biology. That is what makes our country one of the 12 mega diversity countries of the world. Answer Biodiversity is the variety of living … Name the three important components of biodiversity. However, when a similar analysis is done in larger areas, then the slope of regression is much steeper. In the last few decades many of the species are extinct and some are threatened of extinction. These NCERT Solutions for Class 12 of Biology subject includes detailed answers of all the questions in Chapter 15 – Biodiversity and Conservation provided in NCERT Book which is prescribed for class 12 in schools. An analysis of the species-area relationship in smaller regions reveals that the values of slopes of regression is the same irrespective of the taxonomic assemblage or the region. The extinction of one species causes the extinction of other species, which is associated with it in an obligatory way. SaralStudy providing Find Free online CBSE NCERT Soutions for chapter 15 Biodiversity and Conservation of Class 12th biology detail solutions from SaralStudy. Get here NCERT Solutions for Class 12 Biology Chapter 15. Sacred groves are found in Rajasthan, Western Ghats of Karnataka,and. Name the three important components of biodiversity. We provide solutions for questions given in Class 12 Biology text … Download Free solutions of NCERT biology Class 12th from SaralStudy. Multiple choice question(i) Conservation of Biodiversity is important for: (a) Animals(b) Animals and plants(c) Plants(d) All organismsAnswer: (d) All For example, insects and other animals have developed a complex nervous system to control and coordinate their body structure. 8. Class 12 Biology NCERT Solutions, And Textbook For CBSE Students Book | Solution | Revision Questions | Exemplar Problem | Exemplar Solution Board Paper | Model Paper | Notes Following Chapters Are Included. Whats new : 2019-20 NCERT BOOKS Updated. An ecosystem is more stable when it has a high species diversity when compared to a low species diversity ecosystem, Higher biodiversity causes the ecosystem to more stable in productivity, hence more resistant to any disturbance such as floods or alien species invasions, The ecological balance in an ecosystem rich in biodiversity remains unchanged. Biodiversity is referred to the variety of living forms found in different ecosystems including variability observed in life forms from different sources such as air, water and land. Among the ecosystem services are control of floods and soil erosion. Also, high biodiversity makes the ecosystem more stable in productivity and more resistant towards disturbances such as alien species invasions and floods. Example â Nile perch caused the extinction of more than two hundred species of native fish of Lake Victoria in Kenya when they were introduced in the lake. Following are the major causes: 6. There are three different hypotheses proposed by scientists for explaining species richness in the tropics. Three hypotheses used by scientists to explain species richness in the tropics are as follows: 4. Which type of cell division occurs during these events? (2) Tropical regions have less seasonal variations and have a more or less constant environment. Therefore, biodiversity has a significant role in preserving the ecological health and balance of an ecosystem.
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