The upright pyramid of number is absent in
Pond
Forest
Lake
Grassland
The pyramid of biomass -
Biomass refers to the total weight of living matter per unit area. In an ecosystem, the biomass decreases from the producer level to the consumer level.
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Option 1)
Pond
This is incorrect solution.
Option 2)
Forest
This is correct solution.
Option 3)
Lake
This is incorrect solution.
Option 4)
Grassland
This is incorrect solution.