Question

The correct sequence of components through which energy may pass from initial source, through an ecosystem is

• A. Sun $\to$ Autotrophs $\to$ Heterotrophs $\to$ Environment $\to$ Space
• B. Space $\to$ Environment $\to$ Heterotrophs $\to$ Autotrophs $\to$ Sun
• C. Sun $\to$ Space $\to$ Environment $\to$ Heterotrophs $\to$ Autotrophs
• D. Sun $\to$ Space $\to$ Environment $\to$ Autotrophs $\to$ Heterotrophs

Answer 1

The correct option is D Sun $\to$ Space $\to$ Environment $\to$ Autotrophs $\to$ Heterotrophs

The energy flow starts from the sun. The light energy enters the space and then into the atmosphere. The energy in the atmosphere is captured by the plants which are autotrophs. Plants convert this light energy to chemical energy by photosynthesis. The food prepared by the plants is consumed by the heterotrophs. The heterotrophs are utilized by the decomposers.

So, the correct answer is option D.