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JSS2: BASIC SCIENCE - 1ST TERM

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  1. Living Things (Habitat) | Week 1, 2 & 3
    8Topics
    |
    1 Quiz
  2. Living Things (Uniqueness of Man) | Week 4
    9Topics
    |
    1 Quiz
  3. Growth and Development | Week 5 & 6
    4Topics
    |
    1 Quiz
  4. Chemicals | Week 7 & 8
    4Topics
    |
    1 Quiz
  5. Work, Energy & Power | Week 9
    4Topics
    |
    1 Quiz
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Pyramid Numbers:

This is a diagram illustrating the number of organisms at each trophic level in a food chain. In a food chain, there are more organisms at the lower trophic level than at the higher trophic level. This can be illustrated below:

Pyramid of Numbers
Pyramid of Numbers.

Pyramid of Energy:

This is the diagram illustrating how energy flows from one organism to the other in a food chain. As energy flows from one organism to another, energy is lost in form of heat. This is illustrated below:

Pyramid of Energy
Pyramid of Energy.
The Energy - Food Pyramid
The Energy – Food Pyramid.

Pyramid of Mass:

This is the diagram illustrating the increasing size of organisms from one trophic level to the other. Organisms at a higher level of a food chain are often larger in size while the ones at the base are smaller in size.

Pyramid of Biomass
Pyramid of Biomass.
Upright Pyramid of Biomass in a Terrestrial Ecosystem
Upright Pyramid of Biomass in a Terrestrial Ecosystem.
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