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2. Living Things in Ecosystems

Ecosystems are dynamic systems comprising living organisms and their physical environment. Each type of organism plays a key role, such as producers, consumers, and decomposers, maintaining ecological balance. Energy flow from producers to various consumers illustrates the interconnectedness of life forms, while biodiversity is crucial for ecosystem stability and resilience against environmental changes.

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Sections

  • 2

    Living Things In Ecosystems

    Ecosystems consist of living organisms interacting with their environment, with each organism playing a vital role in maintaining ecological balance.

    Learning Practice

  • 2.1

    Introduction

    Ecosystems consist of living organisms and their non-living environment, where each organism plays a crucial role in maintaining ecological balance.

    Learning Practice

  • 2.2

    Components Of An Ecosystem

    Ecosystems comprise biotic and abiotic components that interact and support life.

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  • 2.3

    Levels Of Organization In An Ecosystem

    The levels of organization in an ecosystem include individual organisms, populations, communities, ecosystems, and the biosphere.

    Learning Practice

  • 2.4

    Roles Of Organisms In Ecosystems

    Organisms in ecosystems have specific roles that are essential for maintaining ecological balance.

    Learning Practice

  • 2.5

    Food Chains And Food Webs

    This section covers the basic concepts of food chains and food webs, explaining how energy flows through ecosystems via feeding relationships.

    Learning Practice

  • 2.6

    Energy Flow In Ecosystems

    Energy in ecosystems flows in a unidirectional manner from the sun, through producers and consumers, to decomposers.

    Learning Practice

  • 2.7

    Ecological Balance

    Ecological balance refers to the equilibrium between living organisms and their environment, crucial for ecosystem stability, which can be disrupted by human activities.

    Learning Practice

  • 2.8

    Importance Of Biodiversity

    Biodiversity is crucial for ecosystem stability, providing food, medicine, and resilience against environmental changes.

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  • 2.9

    Conservation Of Ecosystems

    This section highlights the importance of conserving ecosystems through protecting habitats, promoting sustainable practices, and raising awareness.

    Learning Practice

References

es9-2.pdf

Class Notes

Memorization

What we have learnt

  • Ecosystems are composed of ...
  • Organisms in ecosystems per...
  • Energy flows in a unidirect...

Final Test

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