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5. Pyramid of Number

The chapter delves into various ecological pyramids including the pyramid of numbers, biomass, and energy, highlighting their roles in depicting ecosystem dynamics. It categorizes ecosystems into natural and artificial, and outlines their abiotic and biotic components, with specific examples like ponds, oceans, and estuaries. Furthermore, it addresses biodiversity, its levels, values, and the significance of conservation efforts.

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Sections

  • 5.1

    Pyramid Of Number

    The Pyramid of Number illustrates the relationship between producers, herbivores, and carnivores in ecosystems, showing how their numbers decrease at successive trophic levels.

    Learning Practice

  • 5.2

    Pyramid Of Biomass

    The Pyramid of Biomass depicts the relationship between different trophic levels based on biomass, showing a general decrease from producers to top carnivores.

    Learning Practice

  • 5.3

    Pyramid Of Energy

    The Pyramid of Energy illustrates the flow of energy through an ecosystem, showing a decreasing trend from producers to top consumers.

    Learning Practice

  • 5.2.1.4

    Classification Of Ecosystems

    Ecosystems can be classified into natural and artificial categories, influenced by various abiotic and biotic factors.

    Learning Practice

  • 5.2.1.4.1

    Natural Ecosystems

    Natural ecosystems consist of complex interactions between living organisms and their environment, influenced by various ecological pyramids.

    Learning Practice

  • 5.2.1.4.1.1

    Terrestrial Ecosystems

    This section discusses the various types of ecological pyramids and classifications of ecosystems, emphasizing the importance of interactions between abiotic and biotic components.

    Learning Practice

  • 5.2.1.4.1.2

    Aquatic Ecosystems

    This section discusses the structure and classification of aquatic ecosystems, focusing on the pyramids of number, biomass, and energy.

    Learning Practice

  • 5.2.1.4.2

    Artificial Ecosystems

    This section explores the concept of artificial ecosystems, which are man-made environments designed to support specific biotic communities.

    Learning Practice

  • 5.2.1.4.1.2.1

    Pond Ecosystem

    The Pond Ecosystem explores the interactions between different trophic levels and their respective roles within a freshwater environment.

    Learning Practice

  • 5.2.1.4.1.2.1.1

    Abiotic Components

    This section discusses various ecological pyramids and the classifications of ecosystems, focusing on their abiotic and biotic components.

    Learning Practice

  • 5.2.1.4.1.2.1.2

    Biotic Components

    This section discusses the classification of biotic components in ecosystems, emphasizing the relationships among producers, consumers, and decomposers.

    Learning Practice

  • 5.2.1.4.1.2.1.2.1

    Producers

    This section discusses various categories of ecological pyramids including pyramids of number, biomass, and energy, analyzing their roles in different ecosystems.

    Learning Practice

  • 5.2.1.4.1.2.1.2.2

    Consumers

    Learning

  • 5.2.1.4.1.2.1.2.3

    Decomposers

    This section focuses on decomposers within ecosystems, outlining their role in nutrient cycling and energy flow.

    Learning Practice

  • 5.2.1.4.1.2.2

    Ocean Ecosystem

    The ocean ecosystem, covering 70% of the Earth's surface, is characterized by its stability and unique biotic and abiotic components, including various trophic levels of producers and consumers.

    Learning Practice

  • 5.2.1.4.1.2.2.1

    Abiotic Components

    This section explores the fundamental abiotic components of ecosystems, detailing different types of ecological pyramids and classifications of ecosystems.

    Learning Practice

  • 5.5.2.1.4.1.2.2.2

    Biotic Components

    This section discusses the different biotic components of ecosystems and highlights the pyramid structures to illustrate these relationships.

    Learning Practice

  • 5.2.1.4.1.2.3

    Estuarine Ecosystem

    Estuarine ecosystems are areas where freshwater from rivers meets and mixes with saltwater from oceans, creating highly productive and diverse environments.

    Learning Practice

  • 5.2.1.4.1.2.4

    River Ecosystem

    The River Ecosystem section explains the structure of river ecosystems, focusing on the interaction between producers, consumers, and decomposers.

    Learning Practice

  • 5.2.2

    Biodiversity

    Biodiversity encompasses the variety of life forms on Earth and reflects the health of ecosystems.

    Learning Practice

  • 5.2.2.1

    Values Of Biodiversity

    This section discusses the immense value of biodiversity, highlighting its consumptive, productive, social, ethical, and aesthetic contributions to human life.

    Learning Practice

  • 5.2.2.2

    Biodiversity At Global, National And Local Level

    Biodiversity represents the variety of life on Earth, influenced by climatic conditions and geographic locations.

    Learning Practice

  • 5.2.2.1.1

    Consumptive Value

    The consumptive value of biodiversity highlights its importance in providing essential resources such as food, medicines, and fuels to humans.

    Learning Practice

  • 5.2.2.1.2

    Productive Value

    The productive value of biodiversity relates to the commercial utilization of various organisms and their contributions to human society.

    Learning Practice

  • 5.2.2.1.3

    Social Value

    This section discusses the different ecological pyramids and the classification of ecosystems, focusing on natural and artificial ecosystems.

    Learning Practice

  • 5.2.2.1.4

    Ethical Value

    The ethical value of biodiversity emphasizes the inherent pleasure and moral duty humans feel towards the existence of various species.

    Learning Practice

  • 5.2.2.1.5

    Aesthetic Value

    Aesthetic value refers to the appreciation of natural beauty in biodiversity and its impact on human experience.

    Learning Practice

References

ch2 part b.pdf

Class Notes

Memorization

What we have learnt

  • Pyramids of numbers, biomas...
  • Ecosystems can be categoriz...
  • Biodiversity encompasses ge...

Final Test

Revision Tests