Describe the 10% law of flow of energy using example. What percentage of solar energy is captured by plants in terrestrial ecosystem that falls on their leaves?
Answers
Answer:
According to 10 percent law, 90% of the energy captured from the previous trophic level is lost to the environment and only 10 percent is made available to the next trophic level.
In this food chain, at the 4th trophic level, 5 kJ energy is available to the snake
⇒ Energy available to Frog = 10% of 50 kJ
⇒ Energy available to Grasshopper = 10% of 500 kJ
⇒ Energy available to Grass = 10% of 5000 kJ.
Explanation:
(i) Green plants in a terrestrial ecosystem capture about 1% of the energy of sunlight that falls on their leaves.
(ii) When herbivore (primary consumers) eat plants a great deal of energy is lost as heat to the environment, some amount is used for various life processes. An average of 10% of the food eaten is turned into its own body and made available for the next level of consumers.
(iii) The loss of energy at each step is so great that very little usable energy remains after four trophic levels.
(iv) In a food chain the greatest number of individuals are at lower trophic level of an ecosystem. The greatest number is of the producers.
December 27, 2019
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