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Answer» Energy flow in ecosystem: - Except for deep sea hydrothermal ecosystem, sun is the only source of energy for all ecosystems on earth.
- Less than 50% of incident solar radiation is photosynthetically active radiations. (PAR).
- Plants capture 2-10 % of PAR and used in photosynthesis.
- All organisms depend on the producers, either directly or indirectly.
- Energy flow in the ecosystem is unidirectional i.e. energy transferred from producer to consumers.
- Energy transfer is not absolute, and spontaneous, unless energy is degraded it can not be transfer. When energy transferred from one trophic level to another, lot of energy lost in the form of heat to the environment.
- Only 10% of energy transferred from one trophic level to other.
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