This lesson describes the in situ and ex situ methods of maintaining biodiversity, and discusses the advantages and disadvantages associated with both. The engaging PowerPoint and accompanying worksheets have been primarily designed to cover point 4.2.1 (h) of the OCR A-level Biology A specification but the lesson has been carefully planned to enable links to be made to some related topics which are found later in the course such as classification, evolution through natural selection and the Founder effect.
Hours of research has gone into the planning of this lesson to source interesting examples that increase the relevance of the biological content concerning in situ conservation, and these include the Lizard National Nature Reserve in Cornwall, the Lake Télé Community reserve in the Republic of Congo and the marine conservation zone in the waters surrounding Tristan da Cunha. Students will learn how this form of active management conserves habitats and species in their natural environment, with the aim of minimising human impact whilst maintaining biodiversity. The main issues surrounding this method are discussed, including the fact that the impact of this conservation may not be significant if the population has lost much of its genetic diversity and that despite the management, the conditions that caused the species to become endangered may still be present. A number of quick quiz competitions are interspersed throughout the lesson to introduce key terms and values in a fun and memorable way and one of these challenges them to use their knowledge of famous scientists to reveal the surname, Fossey. Dian Fossey was an American conservationist and her years of study of the mountain gorillas is briefly discussed along with the issue that wildlife reserves can draw poachers and tourists to the area, potentially disturbing the natural habitat.
To enrich their understanding of ex situ conservation, the better known examples of ZSL London zoo, Kew Gardens and the Millennium Seed Bank Project in Wakehurst are used. Students will understand how conserving animal species outside of their natural habitat enables human intervention that ensures the animals are fed and given medical assistance when needed as well as reproductive assistance to increase the likelihood of the successful breeding of endangered species. As with the in situ method, the disadvantages are also discussed and there is a focus on the susceptibility of captive populations to diseases as a result of their limited genetic diversity. The final part of the lesson considers how seed banks can be used to ensure that plant species avoid extinction and how the plants can be bred asexually to increase plant populations quickly.
Due to the extensiveness of this lesson, it is estimated that it will take in excess of 2/3 hours of allocated A-level teaching time to cover the tasks and content that is included in the lesson.
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Module 4: Biodiversity, evolution and disease (OCR A-level Biology A)
The detailed content, exam-style questions, guided discussion points and quiz competitions that are found in each of the 16 paid lessons that are included in this bundle (as well as the 5 free lessons which are named at the bottom) cover the following specification points in module 4 of the OCR A-level Biology A specification: Module 4.1.1 * The different types of pathogen that can cause communicable diseases in plants and animals * The means of transmission of animal and plant communicable pathogens * The primary non-specific defences against pathogens in animals * The structure and mode of action of phagocytes * The structure, different roles and modes of action of B and T lymphocytes in the specific immune response * The primary and secondary immune responses * The structure and general functions of antibodies * An outline of the action of opsonins, agglutinins and anti-toxins * The differences between active and passive immunity, and between natural and artificial immunity * Autoimmune diseases * The principles of vaccination Module 4.2.1 * How biodiversity can be considered at different levels * The random and non-random sampling strategies that are carried out to measure the biodiversity of a habitat * How to measure species richness and species evenness * The use and interpretation of Simpson's Index of Diversity * How genetic biodiversity may be assessed * The ecological, economic and aesthetic reasons for maintaining biodiversity * In situ and ex situ methods of maintaining biodiversity * International and local conservation agreements made to protect species and habitats 4.2.2 * The biological classification of species * The binomial system of naming species and the advantage of such a system * The features used to classify organisms into the five kingdoms * The evidence that has led to new classification systems * The different types of variation * Using the standard deviation to measure the spread of a set of data * Using the Student's t-test to compare means of data values of two populations * Using the Spearman's rank correlation coefficient to consider the relationship of the data * The different types of adaptations to their environment * The mechanism by which natural selection can affect the characteristics of a population over time * How evolution in some species has an impact on human populations If you would like to get an idea of the quality of the lessons that are included in this bundle, then download the following five OCR A lessons which have been uploaded for free: Immunity & vaccinations Reasons for maintaining biodiversity Taxonomic hierarchy and the binomial naming system Adaptations and natural selection Transmission of animal and plant pathogens
£24.50
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Module 4.2.1: Biodiversity (OCR A-level Biology A)
The biodiversity topic may not be every students' favourite, but questions relating to this module 4 topic are very common in the OCR terminal exams, meaning it can be an area where a lot of marks are unfortunately lost. With this in mind, hours of research and planning has gone into each of the 6 lessons that are included in this bundle to ensure that the slides and accompanying worksheets contain interesting and relevant biological examples that will catch the attention of the students and ultimately increase the likelihood of the retention of the detailed A-level content. There are also regular understanding checks in the form of exam-style questions with accompanying mark schemes to allow the students to assess their progress. The following specification points in module 4.2.1 of the OCR A-level Biology A specification are covered in this bundle: * How biodiversity may be considered at different levels * Random sampling and non-random sampling (opportunistic, stratified, systematic) * How to measure species richness and species evenness * The use and interpretation of Simpson's Index of Diversity * How genetic biodiversity may be assessed, including calculations * The ecological, economic and aesthetic reasons for maintaining biodiversity * In situ and ex situ methods of maintaining biodiversity * International and local conservation agreements made to protects species and habitats The "reasons for maintaining biodiversity" lesson has been uploaded for free so if you download this, you will be able to recognise the quality of lesson that can be found in this bundle
£11.20
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