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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:

  • Meaning of Adaptation
  • Forms of Adaptation
    • Behavioural Adaptation
    • Structural Adaptation
    • Physiological Adaptation

What is Adaptation?

Adaptation is features, functions, or behaviour that enable an organism to survive and reproduce successfully in response to changes in the environment.

Forms of Adaptation:

  • Structural Adaptation
  • Physiological/Functional Adaptation
  • Behavioural Adaptation

Behavioural Adaptation:

These are actions taken by an animal in response to some type of external stimulus in order to survive. Hibernating during winter is an example of a behavioural adaptation.

A chameleon’s behavioural adaptation is colour change. Chameleons change their colours to represent mood. For example, a chameleon may change to red or red-orange if it feels angry or territorial. Also, chameleons change colour to match their environment.

chameleon
Scientists believe that chameleons change color to reflect their moods. By doing so, they send social signals to other chameleons.

An important behavioural adaptation of birds is their ability to migrate during seasonal changes. Migration is a very important tool for birds; it allows them to survive when they might not if they stay in the same area all year round.

 

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