Statement 1: The amount of usable energy remains constant as it is passed from one trophic level to another. Statement 2: The energy within an ecosystem is constant and never changes. Choose the correct answer: (A) Both Statement 1 and Statement 2 are correct (B) Both Statement 1 and Statement 2 are incorrect (C) Statement 1 is correct and Statement 2 is incorrect (D) Statement 1 is incorrect and Statement 2 is correct
Question:
Statement 1: The amount of usable energy remains constant as it is passed from one trophic level to another. Statement 2: The energy within an ecosystem is constant and never changes. Choose the correct answer: (A) Both Statement 1 and Statement 2 are correct (B) Both Statement 1 and Statement 2 are incorrect (C) Statement 1 is correct and Statement 2 is incorrect (D) Statement 1 is incorrect and Statement 2 is correct
Statement 1: The amount of usable energy remains constant as it is passed from one trophic level to another. Statement 2: The energy within an ecosystem is constant and never changes. Choose the correct answer: (A) Both Statement 1 and Statement 2 are correct (B) Both Statement 1 and Statement 2 are incorrect (C) Statement 1 is correct and Statement 2 is incorrect (D) Statement 1 is incorrect and Statement 2 is correct
Options
Answer: (B) Both Statement 1 and Statement 2 are incorrect
Explanation:
Both statements are incorrect. Statement 1 is wrong — energy is NOT constant as it passes through trophic levels. According to the 10% Law (Lindemann's Law), only about 10% of energy is transferred from one trophic level to the next; 90% is lost as heat through respiration and metabolic processes. Statement 2 is also wrong — energy in an ecosystem is not constant; it flows unidirectionally and is continuously lost as heat. Unlike nutrients (which cycle), energy flow is linear and non-cyclic.
Explanation:
Both statements are incorrect. Statement 1 is wrong — energy is NOT constant as it passes through trophic levels. According to the 10% Law (Lindemann's Law), only about 10% of energy is transferred from one trophic level to the next; 90% is lost as heat through respiration and metabolic processes. Statement 2 is also wrong — energy in an ecosystem is not constant; it flows unidirectionally and is continuously lost as heat. Unlike nutrients (which cycle), energy flow is linear and non-cyclic.
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