Question

i) The pyramid shows a decrease in the biomass as we move up.

Why the biomass is decreasing ?

ii) Give some examples for producers and Primary Consumers.

iii) What is the only energy source of entire eco-system ?

iv) How much biomass is transferred from one tropic level to the

next as we move up ?​

Answer 1

Answer:

ii.Primary consumers are herbivores, feeding on plants. Caterpillars, insects, grasshoppers, termites and hummingbirds are all examples of primary consumers because they only eat autotrophs (plants). There are certain primary consumers that are called specialists because they only eat one type of producers.

iii.Sunlight is the main source of energy for all the organisms in an ecosystem.

iv.On average, only about 10 percent of energy stored as biomass in a trophic level is passed from one level to the next. This is known as “the 10 percent rule” and it limits the number of trophic levels an ecosystem can support.