NEET BIOLOGY

Detailed explanation-1: -A food web is a model of feeding relationships in an ecosystem. When an organism is eaten, the matter and energy stored in its tissues are transferred to the organism that eats it. The arrows in a food web represent this transfer.

Detailed explanation-2: -Primary producers use energy from the sun to produce their own food in the form of glucose, and then primary producers are eaten by primary consumers who are in turn eaten by secondary consumers, and so on, so that energy flows from one trophic level, or level of the food chain, to the next.

Detailed explanation-3: -An energy pyramid is a model that shows the flow of energy from one trophic, or feeding, level to the next in an ecosystem. The model is a diagram that compares the energy used by organisms at each trophic level.

Detailed explanation-4: -The best model that illustrates the flow of energy and matter in an ecosystem is a food web. A food web is made up of interconnected food chains. It is more complex and much larger than a food chain since it shows the feeding relationships of many producers and consumers at each trophic level.

Detailed explanation-5: -Energy flows straight through the ecosystem; it is lost as heat at each step, but it is never recycled. Matter is recycled and is not lost from the ecosystem.