Distinguish between:
(a) Grazing food chain and detritus food chain
(b) Production and decomposition
(c) Upright and inverted pyramid
(d) Food chain and food web
(e) Litter and detritus
(f) Primary and secondary productivity
Distinguish between:
(a) Grazing food chain and detritus food chain
(b) Production and decomposition
(c) Upright and inverted pyramid
(d) Food chain and food web
(e) Litter and detritus
(f) Primary and secondary productivity
S.N.Grazing Food ChainDetritus Food Chain 1.Food chain in which energyWhere energy flows from photosyntheticflows from plants to herbivoresorganisms through detritivores andand then through carnivores.decomposers. 2.Begins with producers at theBegins with detritivores and decomposers asfirst trophic level.the first trophic level. 3.Sun′s energy is fixed byEnergy from the organic matter is used up byproducers and is madedecomposers and detritivores and nutrientsavailable to consumers.are made available for reuse by producers. 4.It supports detrial food chain.It supports grazing food chain by providinginorganic nutrients.
S.N.ProductionDecomposition 1.Process of synthesis of organicProcess of breakdown of complex organicmatter or biomass frommatter into inorganic substances so that theyinorganic matter using radiantcan be reused.energy by plants. 2.It fixes energy.It releases energy and nutrients.
S.N.Upright PyramidInverted Pyramid 1.Pyramid is upright when thePyramid is inverted when the number ofnumber of producers or theirorganism or their biomass at producer level isbiomass is maximum minimum and increases at each trophic levelin a food chain.in a food chain. 2.Pyramid of energy is alwaysPyramid of numbers and biomass is invertedupright.in aquatic system.
S.N.Food ChainFood Web 1.A straight line sequence showingComprises of a number of cross connectingfood energy flow in thefood chains through which food energyecosystem.flows in the ecosystem. 2.Organisms of higher trophic levelOrganisms of higher trophic level feed on afeed on a single type of organismnumber of alternative organisms of lowerof lower trophic level.trophic level. 3.Only members of one trophic levelMembers of different species compete forcompete for the same food.the different food.
LitterDetritusLitter contains all kinds of waste materialsDetritus contains dead animals and plants above the surface of the earth. below and above the surface of the earth.It contains both biodegradableIt contains only biodegradable wastes. as well as non−biodegradable wastes.
S.N.Primary ProductivitySecondary Productivity 1.The rate at which primaryIt is the rate of formation of new organic matterproducers capture and store aby consumers.given amount of energy in theirtissues, in a given time interval. 2.It is comparatively much larger.It is much less and decreases with rise oftrophic level. 3.Fresh organic matterSynthesis of new organic matter fromsynthesised from inorganic rawpre−synthesised organic matter.material.
S.N.Grazing Food ChainDetritus Food Chain 1.Food chain in which energyWhere energy flows from photosyntheticflows from plants to herbivoresorganisms through detritivores andand then through carnivores.decomposers. 2.Begins with producers at theBegins with detritivores and decomposers asfirst trophic level.the first trophic level. 3.Sun′s energy is fixed byEnergy from the organic matter is used up byproducers and is madedecomposers and detritivores and nutrientsavailable to consumers.are made available for reuse by producers. 4.It supports detrial food chain.It supports grazing food chain by providinginorganic nutrients.
S.N.ProductionDecomposition 1.Process of synthesis of organicProcess of breakdown of complex organicmatter or biomass frommatter into inorganic substances so that theyinorganic matter using radiantcan be reused.energy by plants. 2.It fixes energy.It releases energy and nutrients.
S.N.Upright PyramidInverted Pyramid 1.Pyramid is upright when thePyramid is inverted when the number ofnumber of producers or theirorganism or their biomass at producer level isbiomass is maximum minimum and increases at each trophic levelin a food chain.in a food chain. 2.Pyramid of energy is alwaysPyramid of numbers and biomass is invertedupright.in aquatic system.
S.N.Food ChainFood Web 1.A straight line sequence showingComprises of a number of cross connectingfood energy flow in thefood chains through which food energyecosystem.flows in the ecosystem. 2.Organisms of higher trophic levelOrganisms of higher trophic level feed on afeed on a single type of organismnumber of alternative organisms of lowerof lower trophic level.trophic level. 3.Only members of one trophic levelMembers of different species compete forcompete for the same food.the different food.
LitterDetritusLitter contains all kinds of waste materialsDetritus contains dead animals and plants above the surface of the earth. below and above the surface of the earth.It contains both biodegradableIt contains only biodegradable wastes. as well as non−biodegradable wastes.
S.N.Primary ProductivitySecondary Productivity 1.The rate at which primaryIt is the rate of formation of new organic matterproducers capture and store aby consumers.given amount of energy in theirtissues, in a given time interval. 2.It is comparatively much larger.It is much less and decreases with rise oftrophic level. 3.Fresh organic matterSynthesis of new organic matter fromsynthesised from inorganic rawpre−synthesised organic matter.material.
