Which among the following in a food chain flows unidirectionally?
Food
Matter
Energy
Water
Energy flow in any ecosystem is unidirectional. Energy once transmitted to the next trophic level, does not come back to the previous level.
Flow of matter in food chain is not unidirectional because
Q49. With reference to the food chain, consider the following statements 1. A food chain represents only one part of the food or energy flow. 2. Grazing food chain and Detritus food chain both are linked. 3. A food chain always starts from a living plant. Which of the above statement(s) is/are correct?
Which among the following possess unidirectional valves?