Our Environment
Ecosystem
Mode of nutrition in animals and plants
Autotrophic and Heterotrophic
Saprophytes and decomposers
Saprophytes are plants, fungi, and microorganisms that feed on the dead and decaying
material.
Decomposers break down the organic matter or waste material and release nutrients into
the soil. For example, bacteria, worms, slugs, and snails.
Abiotic components
Nonliving chemical and physical components of the environment like the soil, air, water,
temperature, etc.
Biotic components
Living organisms of the environment like the plants, animals, microbes, and fungi.
Ecosystem
Includes both biotic and abiotic components.
In a given area, all the living things such as plants, animals and organisms interacting
with each other, and also with their non-living environments, i.e., weather, earth, sun,
soil, climate, atmosphere.
Trophic levels
It refers to the various levels in a food web as per the flow of energy.
The different trophic levels are -
Producers (T1)
Primary consumers (herbivores-T2)
Secondary consumers (primary carnivores -T2)
Tertiary consumers(Sec carnivores -T3)
Quaternary consumers (Ter. carnivores T4)
Decomposers
Pyramid of trophic levels
Is a graphical representation.
Can be the pyramid of numbers, pyramid of biomass or pyramid of energy.
All the pyramids start with producers.
Ecosystem
Mode of nutrition in animals and plants
Autotrophic and Heterotrophic
Saprophytes and decomposers
Saprophytes are plants, fungi, and microorganisms that feed on the dead and decaying
material.
Decomposers break down the organic matter or waste material and release nutrients into
the soil. For example, bacteria, worms, slugs, and snails.
Abiotic components
Nonliving chemical and physical components of the environment like the soil, air, water,
temperature, etc.
Biotic components
Living organisms of the environment like the plants, animals, microbes, and fungi.
Ecosystem
Includes both biotic and abiotic components.
In a given area, all the living things such as plants, animals and organisms interacting
with each other, and also with their non-living environments, i.e., weather, earth, sun,
soil, climate, atmosphere.
Trophic levels
It refers to the various levels in a food web as per the flow of energy.
The different trophic levels are -
Producers (T1)
Primary consumers (herbivores-T2)
Secondary consumers (primary carnivores -T2)
Tertiary consumers(Sec carnivores -T3)
Quaternary consumers (Ter. carnivores T4)
Decomposers
Pyramid of trophic levels
Is a graphical representation.
Can be the pyramid of numbers, pyramid of biomass or pyramid of energy.
All the pyramids start with producers.
