Class 12th Biology 2018 Set1 Delhi Board Paper Solution
What is a trophic level in an ecosystem? What is ‘standing crop’ with reference to it?
In an ecosystem each organism occupy a specific place in the food chain called tropic level.
Standing crop: In each tropic level their is certain mass of living material at a particular time called the standing crop. It is a measureal as the biomass of living organism present in unit area.
The role of first tropic level an ecosystem.
Producer or Plant occupies first tropic level in a food cgain. Plant capture 2-4 percent of photosynthetically active radiation and convert into chemical energy. The energy is transferred in an ecosystem in the form of food when one organism is eaten by another. Each step of food chain transfer only 10% to the next trophic level.
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