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5 Written questions

5 Matching questions

  1. vertical stratification
  2. biological control
  3. insect birth control
  4. symbiotic relationship
  5. community
  1. a an alternative of pesticides
    1. crop rotations 2. introduce natural enemies of the pests 3. use natural plants toxins instead of sythetic ones 4. insect birth control
  2. b an interaction between two or more species that live together in direct contact
  3. c when species live on different levels of ecosystem: some on ground, some on branches, some in treetops
  4. d radiation on males insects... released but no fertile babies: male sterile
  5. e all living things in one area

5 Multiple choice questions

  1. the plants would die, therefore no life because decomposers put nutrients back into the soil.
  2. drought-resistant plant with shallow roots to capture as much water as possible; can expand to hold extra water; spines
  3. examples of how human tried to introduce new species into new ecosystems
  4. food
  5. both cover temperate & tropical regions
    low annual rainfall/uneven seasonal
    occurrence of rainfall --> conditions
    inhospitable for forests
    grazing & burrowing animals

5 True/False questions

  1. biomedrought-resistant plant with shallow roots to capture as much water as possible; can expand to hold extra water; spines


  2. gross primary productivityamount of energy converted to chemical energy by photosynthesis per unit time in an ecosystem


  3. pesticideschemicals that kill organisms that we
    consider to be undesirable
    ex: insecticides, herbicides, fungicides, mice/rat killers
    makes pests more resistant


  4. ecosystemthe community plus the non-living things they interact with


  5. dispersion< 10 in of rainfall/yr.
    not even grasses survive
    most extreme temp. fluctuations
    daytime surface temp ~ 70° C
    barely vegetation --> heat is lost --> night is
    plants are drought resistant; annual
    most animals active during time when heat is
    not so intense; daytime: animals hide in