Interaction between organisms

• What is the relationship between prey and predator populations?

  They go in cycles
• What are the types of interdependence mentioned?

  • Predator-prey cycles
  • Parasitism
• What usually limits the population of prey species?

  The amount of food available
• What happens to the predator population when the prey population increases?

  The predator population also increases
• Why does the number of prey decrease when the predator population increases?

  More prey are eaten by predators
• How do predator-prey cycles demonstrate interdependence among populations?

  Populations depend on each other for survival
• What are the two types of interdependence discussed in the material?

  • Parasitic relationships (parasitism)
  • Mutualistic relationships (mutualism)
• What do parasites do to their hosts?

  They live off the host without giving back
• How do parasites typically affect their hosts?

  They often harm the host
• What is mutualism?

  A relationship where both organisms benefit
• How do plants benefit from mutualistic relationships with insects?

  Plants are pollinated by insects
• What do insects gain from mutualistic relationships with plants?

  A sip of sweet, sugary nectar
• What is the significance of the statement "everything affects everything else" in ecology?

  • Indicates interconnectedness of ecosystems
  • Highlights the impact of one species on another
  • Emphasizes the complexity of ecological relationships
• What type of interdependence is exemplified by bacteria in a cow's stomach?

  Mutualism
• Why are bacteria important for cows?

  They help cows digest grass fully
• What is the relationship between cows and bacteria in their stomachs?

  It is a mutualistic relationship