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Food Chain Food WebEcological Pyramids

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Contents

Food chain

Trophic levels

Types of food chains

Food webSignificance of food web

Ecological pyramids

Disadvantages of ecological pyramids

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7/26/2019 Food Chain Youtube Lecture Handouts

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Food Chain

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Steps Of Food ChainsVisit video at Youtube Examrace Channel https://www.youtube.com/watch?v=kol_k6gNZmQ

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Trophic LevelsTrophic

Level 3

(Carnivores)

Trophic Level 2

(Herbivores)

Trophic Level 1

(Autotrophs)

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Types Of Food ChainGrazing food chain

Detritus food chain

Parasitic food chain

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Food WebVisit video at Youtube Examrace Channel https://www.youtube.com/watch?v=kol_k6gNZmQ

Significance Of Food WebMaintain the ecological balance

Feeding relations among organisms

Energy flow and nutrient cyclingAlternate source of food

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Ecological PyramidsPyramid of NumberPyramid of Biomass

Pyramid of Energy

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Pyramid Of Number

Lion

Goat

Plant

Hyperparasite

Parasite

Birds

Tree

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Pyramid Of Number

Large sized Trees

Birds, Elephant

Rabbit etc.

Lion , Tiger

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Pyramid of Biomass

Lion

Goat

Plant

Large fishes

Small fishes

Zooplankton

Grassland

ecosystem

Aquatic Ecosystem

Phytoplankton

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Pyramid of Energy

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Disadvantages Of Ecological Pyramids Only indicates food chain

Decomposers

Single Organisms different trophic levels

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