State 10 % law of energy. Explain with example how every flow through different tropic level
Answers
Answer:
the answer is below
Explanation:
the the 10% law states that only 10% of the energy will be passed to the next trophic level
because 90% of the energy is used by the organism in life processes
eg. plant (500J) -- goat( 50J)---human( 5J)
10 % law of energy transfer in an ecosystem :
• The 10 % law of energy transfer through various trophic levels in an ecosystem was introduced by Raymond Lindeman in 1942.
• Each level in a food chain is called a trophic level.
• The law of 10 % energy transfer states that only 10 % of the energy absorbed by a trophic level in a food chain is transferred to the next trophic level in the food chain.
•The remaining 90 % energy is either lost as heat to the environment or used up in metabolic activities by the organisms.
• According to this law, the pattern of energy transfer in a food chain is like a pyramid. As the level in a food chain increases, the energy received by it decreases.
This can be understood with the help of a simple example.
• Producers, like green plants, form the lowest trophic level in a food chain. Suppose, they absorb an energy of 1000 J from the Sun to prepare food for themselves.
• The next trophic level comprises of primary consumers like herbivores. Now, only 10 % of 1000 J is passed on from producers to primary consumers, i.e, 100 J of energy.
• Moving up further, the next trophic level is made up of secondary consumers like carnivores. 90 % of 100 J is lost and only 10 % is transferred to this level, i.e., 10 J of energy is transferred.
• The top-most trophic level of tertiary consumers, like omnivores, receives only 10 % of 10 J, i.e. 1 J of energy.
• Therefore, we can see that like a pyramid, the energy decreases from bottom to top in each trophic level.