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
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Give two differences between food chain and food web.
Food chain Food Web (a) Food chain is a series of organisms feeding on one another (b) Members of higher trophic level feed upon a single type of organism of the lower trophic level (a)...
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A chain of 2 m, on table such has 60 cm hanged from edge of the table. Mass of chain=4 kg. Work done to pull the entire chain on the table is.
Given M and L are total length and mass of the chain. M = 4 kg L = 2 m And let length and mass of part of chain hanging down are l and m...
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Give reasons to explain why the Maasai community lost their grazing land
The Maasailand was divided into British and German territories in 1885. The new international boundary restricted the movement of the Maasai community. Moreover, declaration of a vast tract of pastureland...
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Distinguish between (a) Grazing food chain and detritus food chain
(a) Grazing food chain and detritus food chain Grazing food chain Detritus food chain In this food chain, energy is derived from the Sun. In this food chain, energy comes from organic matter (or...
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The rate of decomposition of detritus is affected by the abiotic factors like availability of oxygen, pH of the soil substratum, temperature etc.
The decomposition of detritus is due to activities of microorganisms.The rate of growth of microbes is affected by temperature.The pH of substratum affects the composition of microbes (acidophiles / basophiles)which...
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The rate of decomposition of detritus is affected by the abiotic factors like availability of oxygen
The decomposition of detritus is due to activities of microorganisms. The rate of growth of microbes is affected by temperature. The pH of substratum affects the composition of microbes (acidophiles...
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Half of a herd of deer are grazing in the field and three fourths of the remaining are playing nearby. The rest 9 are drinking water from the pond.
Let total no.of deer = x half of herd =x/2 3/4 of remaining half herd =(x/2)(3/4) ...
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Consider the food chain: Grass --> Deer --> Lion. What will happen if lions are removed from the above food chain?
Removal of lions from the above food chain will increase the number of deer to such an extent that they will eat up the whole grass. The density of producer...
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Give reasons to explain why the Maasai community lost their grazing lands
The Maasailand was divided into British and German territories in 1885. The new international boundary restricted the movement of the Maasai community. Moreover, declaration of a vast tract of pastureland...
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A body of weight w1 is suspended from the ceiling of a room through a chain of weight w2The ceiling pulls the chain by a force
Correct option (c) Explanation: The ceiling pulls the chain with a force equal to the sum of weights of chain and the body. So the pulling force = (w1 + w2)
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