The sequence given below represents flow of energy in a grassland ecosystem. Grass→ Grasshopper→ Frog→ Snake→ Hawk If GPP is 3000 K Cal and R is 20% at the producer level, estimate the secondary productivity of snake (as per 10 percent law).
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a
2.4 K Cal
b
3.0 K Cal
c
0.24 K Cal
d
0.30 K Cal
answer is A.
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Detailed Solution
GPP = 3000 K CalR = 20% of GPP = 3000×20100=600 K CalNPP = GPP – RNPP = 3000 – 600 = 2400 K CalAs per 10 per cent law :Grass (2400 K Cal) →Grasshopper (240 K Cal)→Frog (24 K Cal)→Snake (2.4 K Cal)→Hawk (0.24 K Cal)
The sequence given below represents flow of energy in a grassland ecosystem. Grass→ Grasshopper→ Frog→ Snake→ Hawk If GPP is 3000 K Cal and R is 20% at the producer level, estimate the secondary productivity of snake (as per 10 percent law).