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SS2: BIOLOGY - 2ND TERM

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  1. Mechanism of the Respiratory System | Week 1
    6 Topics
    |
    2 Quizzes
  2. Mechanism of Gaseous Exchange in Plants | Week 2
    1 Topic
    |
    1 Quiz
  3. Excretory Systems I | Week 3
    5 Topics
    |
    1 Quiz
  4. Excretory Systems II | Week 4
    4 Topics
    |
    3 Quizzes
  5. Nutrient Cycling in Nature I | Week 5
    3 Topics
  6. Nutrient Cycling in Nature II | Week 6
    2 Topics
    |
    1 Quiz
  7. Ecological Management | Week 7
    4 Topics
  8. Ecological Tolerance | Week 8
    2 Topics
    |
    1 Quiz
  9. Adaptation | Week 9
    3 Topics
    |
    1 Quiz

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Topic Content:

  • Definition of Commensalism
  • Examples of Commensalism

Commensalism is an association between two organisms of different species in which one benefits and the other is not adversely affected.

Examples:

Shark and Remora Fish:

The remora is a small fish which attaches itself to the shark by means of a sucker to the body of the shark. The shark carries the remora about, when the shark feeds, the remora fish feeds on the scraps of food particles that fall out towards it.

 

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