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Exercise and reference answers

Items
  1. Group
    Both gain
    Item
    Lichen
  2. Group
    Both gain
    Item
    Mycorrhiza
  3. Group
    Both gain
    Item
    Fig and wasp
  4. Group
    One gains
    Item
    Cattle egret
  5. Group
    One gains
    Item
    Orchid mango
  6. Group
    One gains
    Item
    Clown fish
  7. Group
    Both lose
    Item
    Flamingo fish
  8. Group
    Both lose
    Item
    Goat tortoise
  9. Group
    Both lose
    Item
    Two barnacles
Groups
  1. Item
    Both gain
  2. Item
    One gains
  3. Item
    Both lose
Instructions
Drop each pair onto both gain, one gains or both lose.

Explanation

_Source: syllabus Biology, Chapter 13, Organisms and Populations._
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