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SS1: BIOLOGY - 1ST TERM

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  1. Introduction to Biology | Week 1
    6 Topics
    |
    1 Quiz
  2. Recognizing Living Things | Week 2
    3 Topics
    |
    1 Quiz
  3. Organisation of Life | Week 3
    3 Topics
  4. Classification of Living Organisms | Week 4
    7 Topics
    |
    1 Quiz
  5. Kingdom Prokaryotae / Monera & Kingdom Protista | Week 5
    3 Topics
    |
    3 Quizzes
  6. Kingdom Fungi & Kingdom Plantae | Week 6
    9 Topics
    |
    2 Quizzes
  7. Kingdom Animalia I | Week 7
    6 Topics
    |
    1 Quiz
  8. Kingdom Animalia II | Week 8
    5 Topics
    |
    1 Quiz
  9. The Cell | Week 9
    3 Topics
    |
    1 Quiz
  10. The Cell Structure and Functions | Week 10
    4 Topics
    |
    1 Quiz
  11. The Cell and its Environment | Week 11
    4 Topics
    |
    1 Quiz
  12. Nutrition in Plants | Week 12
    4 Topics
    |
    1 Quiz



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Lesson 3, Topic 3
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Theory Questions – Organisation of Life

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Organisation of Life – Theory Questions:

1. State two advantages and two disadvantages of complexity in an organism.
2. Name two living things on each level of organization of life.

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Organisation of Life – Theory Questions:

1. State two advantages and two disadvantages of complexity in an organism.

Answer:

Advantages of Complexity:

1. It leads to division of labour.

2. It brings about more efficiency in the function and adaptation of the organism.

Disadvantages of Complexity:

Complex organisms require more resources than simple ones because of their size.

2. They have a small surface area to volume ratio compared to simple ones, therefore, diffusion is not efficient to supply materials to different parts of the body.

3. They need a specialized transport system for efficient movement of materials within their body.

4. Ability to regenerate and grow back lost parts become reduced in complex multicellular organisms.

 

2. Name two living things on each level of organization of life.

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