Question

Write any two points of difference between grazing food-chain and detritus food-chain.

Hint:

Remember: GFC relies on "Living" energy (Solar $\rightarrow$ Plant), whereas DFC relies on "Dead" energy (Decomposition).

Answer 1

Step 1: Understanding the Concept:
Food chains represent the flow of energy and nutrients through an ecosystem.
They are categorized based on their starting point and the nature of the energy source.
Step 2: Detailed Explanation:
The differences between Grazing Food Chain (GFC) and Detritus Food Chain (DFC) are:
1. Source of Energy: GFC begins with green plants (producers) that capture solar energy.
DFC begins with dead organic matter (detritus) like fallen leaves or animal remains.
2. Major Ecosystem Roles: In aquatic ecosystems, GFC is the major conduit for energy flow.
In terrestrial ecosystems, a much larger fraction of energy flows through the DFC than through the GFC.
Step 3: Final Answer:
The main differences are the starting trophic level (Producers vs. Detritus) and the primary ecosystem where they dominate energy flow.