Which of the following shows a one-way passage in an ecosystem?

Category: QuestionsWhich of the following shows a one-way passage in an ecosystem?
Editor">Editor Staff asked 2 weeks ago

Which of the following shows a one-way passage in an ecosystem?
 
(a) Potassium
 
(b) Carbon
 
(c) Phosphorous
 
(d) Free energy
 
This question was addressed to me in an online quiz.
 
My doubt is from Ecosystem Services topic in portion Ecosystem of Biology – Class 12

1 Answers
Editor">Editor Staff answered 2 weeks ago

Correct answer is (d) Free energy
 
For explanation I would say: The movement of energy from the higher trophic levels and its distribution and loss as heat to the lower trophic levels in the environment is unidirectional. It means the energy moves in one direction only that is from higher to the lower-most level.