NEET BIOLOGY

Detailed explanation-1: -To show the flow of energy through ecosystems, food chains are sometimes drawn as energy pyramids. Each step of the pyramid represents a different trophic level, starting with primary producers at the bottom. The width of each step represents the rate of energy flow through each trophic level.

Detailed explanation-2: -The more accurate representation of the actual feeding relationships in the ecosystem is the food web because it emphasizes the different possibilities of energy flow and interaction of the ecosystem.

Detailed explanation-3: -The flow of energy is always unidirectional. The energy passes from primary producers to primary consumers. From the primary consumers, the energy is passed to secondary consumers and then to tertiary consumers.

Detailed explanation-4: -Food webs represent all of the food chains within an ecosystem and show how feeding relationships between organisms in different food chains are interconnected. Because the feeding interactions in an ecosystem are interconnected, as shown by the food web, we can see how energy flows through an entire ecosystem.