In a grass-deer-tiger food chain, grass biomass is one tonne. The tiger biomass shall be

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100kg

10kg

200kg

1kg

answer is B.

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Detailed Solution

Concept: The graphical representation of biomass present per unit area at any time in different trophic situations is called the aggregate of biomass. The aggregate of biomass in the case of the terrestrial( land) ecosystem is upright( more at base and lower at top) while in the case of the submarine ecosystem it's set up to be reversed( lower at the bottom and further at top). According to the law of 10, the biomass will be dwindling as it goes from bottom to top. The organisms at the bottom of the aggregate are the directors that produce 1 tonne of the biomass, also the alternate trophic position includes the beasties that eat the organism of the first trophic position performing a drop in 10% of the biomass. They're also eaten by the herbivores of the third trophic position again dwindling the quantum of the biomass. Therefore the barracuda comes in the order of herbivores set up in the third trophic position and their biomass shall be 10 Kg.
Hence, option 2 is the correct answer

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