Posts Tagged Under: Ecosystem

Eutrophication

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Eutrophication is the natural aging of a lake by biological enrichment of its water.

Lakes are classified according to their nutrient content and primary productivity.

Biomagnification

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Biomagnification refers to increase in concentration of the toxicant/pollutant at successive trophic levels, i.e. concentration of the toxic substance increases as it goes to organisms of

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AIPMT Biology- Energy transfer in food chain

10 Percent Law of Energy Transfer

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Organisms at each trophic level depend on those at the lower trophic level for their energy demands. Transfer of energy follows 10 per cent law, i.e.,  only

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Productivity in an Ecosystem

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Sun is the only source of energy for all ecosystems on Earth. Out of which, less than 50% of the total incident solar radiation is useful for photosynthesis, which is

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AIPMT Biology - Trophic Levels in an Ecosystem

Ecosystem: Trophic Levels

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In an Ecosystem, every organism is assigned a place according to their feeding relationship with other organisms. Based on source of their nutrition or food, organisms occupy a specific place in

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AIPMT Biology - Phosphorus cycle in terrestrial ecosystem

Carbon and Phosphorus Cycle

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The movement of nutrient elements through the various components of an ecosystem is called Nutrient cycling.

AIPMT Biology - Pyramid of Biomass

Ecological Pyramids

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We all are aware of the shape of a pyramid. The base of a pyramid is broad and it narrows down at the apex.

We got similar shapes like pyramid when we express

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Decomposition in Ecosystem

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Decomposition is the process of breaking down complex organic matter into inorganic substances like carbon dioxide, water and nutrients. Decomposition is done by decomposers.

  • Dead plant remains such as leaves, bark, flowers

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AIPMT Biology - Food Web

Ecosystem: Food Chain and Food Web

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In ecosystem, energy flows through each trophic level in food chains and webs.

  • Food Chain is a sequence of organisms, in which each organism serves as a

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Ecosystem:Energy flow and Nutrient Cycling

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Ecosystem is the sum of all organisms living in a given area and the abiotic factors with which they interact. Abiotic factors consist of nonliving components such as water, air, nutrients, rocks,

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