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Biology Grade 11 Unit 6: Population and natural resources

national exam questions have come from this unit. It runs 54 pages; one careful study pass takes about 4.9 hours, and its difficulty is harder among Biology units. Each section below lists the questions set from it, with the year, and opens the page that teaches it.

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6.1.1 Population size, density and dispersal · read p. 232
  • 2013 E.C., Q89 – Which one of the following pairs of biological tools and their functions is FALSE?
6.1.2 Exponential and logistic growth in populations · read p. 237
  • 2013 E.C., Q39 – This item is based on the table below. Condition Population size Natality exceeds mortality X Mortality exceeds natality Y Mortality and natality are equal Z The population number of X, Y, and Z, respectively will
  • 2013 E.C., Q40 – This item is based on the table below which shows population growth trend. Time period Numbers in population X Numbers in population Y 0 5 40 1 10 80 2 15 160 3 20 320 4 25 640 5 30 1280 6 35 2560 7 40 5120 Which one of
  • 2013 E.C., Q42 – This item is based on the table below which shows population growth trend. Which one of the following is correct about X and Y?
  • 2011 E.C., Q69 – What is the population growth phase of the current world population?
  • 2011 E.C., Q60 – Under ideal conditions and unlimited resources, continuous population growth pattern is known as:
  • 2009 E.C., Q59 – The maximum population growth rate characteristic of a species is called
  • 2007 E.C., Q59 – What happens when the carrying capacity of an ecosystem is reached?
  • 2005 E.C., Q35 – In which one of the four phases of population growth is the number of the population the highest ?
6.1.3 Demographic structure · read p. 241
  • 2012 E.C., Q5 – What is the economic impact of AIDS?
  • 2010 E.C., Q68 – A country with a high youth population but a low old age population and low infant population shows
  • 2010 E.C., Q78 – Suppose the age pyramid of population has a broad base with a narrow top, which of the following is NOT true about the population?
  • 2009 E.C., Q38 – Which of the following demographic factors can increase the size of the world population?
  • 2008 E.C., Q81 – If a country has a large number of young people relative to the number of old people, to which category of countries does it belong?
  • 2007 E.C., Q77 – Which of the following is NOT a true characteristic of the populations of most of the developing countries of the world?
6.1.4 Population regulation · read p. 246
Not asked in a national paper yet.
6.2 Natural resources · read p. 248
Not asked in a national paper yet.
6.2.1 Renewable · read p. 249
Not asked in a national paper yet.
6.2.2 Non-renewable · read p. 249
Not asked in a national paper yet.
6.3 Conservation of natural resources in Ethiopia · read p. 250
  • 2017 E.C., Q44 – This item is based on the following list of activities. I. Establishing national parks II. Wild sanctuaries III. Preparing wild life reserves IV. Practicing overgrazing Which of the above activities CANNOT be used for th
  • 2017 E.C., Q1 – Which one of the following Ethiopian biological research institutes is known for housing a major gene bank in Africa?
  • 2016 E.C., Q91 – Which one of the following national parks of Ethiopia is declared as the world's heritage site and comprises endemic animals like Walia ibex?
  • 2015 E.C., Q89 – Walia ibex is an endemic animal species in Ethiopia which is found in
  • 2014 E.C., Q36 – The institute of biodiversity conservation is one of the biological research institutes of Ethiopia attempting to conserve the genetic resources of the country. As such, the institute's major research efforts focus on al
  • 2014 E.C., Q30 – Which one of the following national parks is characterized by the presence of wildlife such as elephant, lion, cheetah and giraffe?
  • 2011 E.C., Q59 – The fact that Ethiopia is a regional center of biological diversity which of the following diversity is expressed?
  • 2010 E.C., Q49 – Which one of the following NOT in situ conservation of Biodiversity?
6.4 Impact of traffic accident on wild and domestic animals · read p. 256
Not asked in a national paper yet.
6.5 Impact of human activities on the environment · read p. 259
  • 2018 E.C., Q54 – Which of the following activities does not contribute to the appreciation of nature?
  • 2017 E.C., Q46 – Among the following options, identify the air pollutants that can cause acid rain and its effects, respectively.
  • 2009 E.C., Q44 – Among the following which one is held most responsible for the present fast depletion of the world biodiversity ?
6.5.2 Climate change · read p. 262
Not asked in a national paper yet.
6.5.3 Global warming · read p. 263
Not asked in a national paper yet.
6.5.4 Ozone layer depletion · read p. 265
Not asked in a national paper yet.
6.5.5 Acid rain · read p. 267
Not asked in a national paper yet.
6.5.6 Loss of Biodiversity · read p. 268
  • 2013 E.C., Q32 – Which one of the following explains biodiversity?
  • 2012 E.C., Q26 – Why maintaining habitats is the key and fundamental aspect to conserve biodiversity? Because
  • 2011 E.C., Q18 – Which one of the following terms best describes the number of different species in the biosphere or in a particular area?
  • 2009 E.C., Q58 – The goals of biodiversity conservation include all of the following EXCEPT
  • 2009 E.C., Q82 – Which of the following is the most UNLIKELY action that would be expected from Ethiopians who have been given adequated biological literacy?
  • 2008 E.C., Q43 – What are the possible consequences of deforestation of the tropic rain forest?
6.5.7 Toxic bioaccumulation · read p. 271
Not asked in a national paper yet.
6.5.8 Resource depletion · read p. 272
Not asked in a national paper yet.
6.6 Indigenous conservation practices in Ethiopia · read p. 273
  • 2017 E.C., Q97 – The effect of increased climate change on agricultural productivity is associated with
  • 2015 E.C., Q2 – Which of the following is different from the rest with regard to conservation of vegetation?
  • 2015 E.C., Q88 – Which of the following is an Ethiopian endemic plant?
  • 2014 E.C., Q28 – Actions such as protection of individual species, reduction of pollution, and biodiversity conservation can collectively be taken as methods of
  • 2010 E.C., Q5 – The practice of modern agriculture that reduces crop biodiversity is: