UPTET Paper 1 Model Test 5

Concept:Energy flows through a food chain from producers to consumers. Only about 10% of energy is passed on at each trophic level; the rest is lost as heat. This energy loss causes energy to decrease as the food chain progresses.Explanation:- A food chain transfers food and energy from one organism to another. - It has several trophic levels: producers, primary consumers, secondary consumers, and decomposers. - At each step, energy is used for metabolism and released as heat. - The 10% rule states that only a small fraction of energy moves to the next level. - Therefore, the amount of available energy diminishes steadily along the chain. - Pressure, nutrition, and temperature are not consistently reduced in this way.Answer:Option B: Energy