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Environmental systems & societies · 2009 · May · Paper 3 · SL · Question paper

Environmental systems & societiesQuestion paper2009SLMay

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This question paper is listed under Environmental systems & societies in the 2009 examination archive. Its catalogue level is SL. The catalogue session is May. The information below helps you identify the document before opening the complete PDF. Subject, year and session labels come from the archive catalogue; the original cover remains the reference if a label differs. A file is not automatically suitable for your current syllabus simply because its subject name matches.

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2209-6412 16 pages M09/4/ENVSY/SP3/ENG/TZ0/XX+ Thursday 7 May 2009 (morning) EnvironmEntal systEms standard lE vEl Pa PEr 3 INSTRUCTIONS TO CANDIDATES • Write your session number in the boxes above. • Do not open this examination paper until instructed to do so. • Answer all the questions from Option A and all the questions from either Option B, Option C or Option D in the spaces provided. • You may continue your answers on answer sheets. Write your session number on each answer sheet, and attach them to this examination paper and your cover sheet using the tag provided. • At the end of the examination, indicate the letter of the Option answered in the candidate box on your cover sheet and indicate the number of answer sheets used in the appropriate box on your cover sheet. 1 hour [Personal identifier removed] © International Baccalaureate Organization 2009 2 2 0 9 6 4 1 2 0116 2209-6412 – 2 – M09/4/ENVSY/SP3/ENG/TZ0/XX+ Option A — Analysing Ecosystems The compulsory question below relates to the detailed study of ecosystems. A1. A population of meadow voles in an area of woodland was sampled using small mammal traps over a period of four days. On each occasion any unmarked individuals were marked and all the voles from the capture were then released. The following table represents the data obtained on each of the four days. Meadow vole [Scale: approximately one-third actual size. Linda Gray, © ASAB, reprinted with permission] [Source: Association for the Study of Animal Behaviour (1998) Scent Marking by Male Meadow Voles. www.asab.icapb.ed.ac.uk] Total catch Number in catch already marked Day 1 8 0 Day 2 19 0 Day 3 10 2 Day 4 23 8 [Source: Data 2.3, p. 67 from ECOLOGICAL METHODOLOGY , 2/e by Charles J Krebs. Copyright © 1999 by Addison-Wesley Educational Publishers, Inc. Reprinted by permission of Pearson Education, Inc.] (a) Using these data, estimate the population size of the voles on day four. Show your working. ....................................................................... ....................................................................... .......................................................................
File information
Subject
Environmental systems & societies
Document type
Question paper
Year
2009
Session
May
Level
SL
Paper
3
Examination zone
Not labelled in the archive
Language
Not labelled in the archive
File size
745 KB
Pages
16
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