NEET BIOLOGY

Detailed explanation-1: -Energy is not recycled in ecosystems and each ecosystem requires a continuous input of energy to sustain it. There is some energy transformed at each level of the food chain or food web in an ecosystem. In an ecosystem, energy is frequently transformed from one form to another.

Detailed explanation-2: -As energy moves through an ecosystem, it changes form, but no new energy is created. Similarly, as matter cycles within an ecosystem, atoms are rearranged into various molecules, but no new matter is created. So, during all ecosystem processes, energy and matter are conserved.

Detailed explanation-3: -Energy enters all ecosystems as sunlight? True or False? False! Energy enters most ecosystems as sunlight, but the rest enters the ecosystem through producers!

Detailed explanation-4: -Ecosystems depend on continuous inputs of energy from outside the system. Most ecosystems obtain energy from sunlight. Some obtain energy from chemical compounds. In contrast to energy, matter is recycled in ecosystems.