Energy flow: แบบฝึกหัด

• a.Organisms at higher levels reproduce too slowly
• b.The sun does not provide enough light energy for more levels
• c.Top predators are too large to be eaten by anything else
• d.There is a large loss of energy between each trophic level

• a.Plants contain more energy per unit of dry mass than animal tissue.
• b.Livestock are more efficient at energy conversion than plants.
• c.Energy is lost at each trophic level, so a shorter food chain provides more energy.
• d.Livestock occupy the first trophic level in most agricultural systems.

• a.Chemical energy is converted into light energy by decomposers.
• b.Producers transfer light energy from the Sun into chemical energy.
• c.Energy is recycled from the environment back into the Sun.
• d.Energy is transferred from consumers to producers.

• a.Egestion of undigested cellulose by the primary consumer
• b.Respiration by the primary consumer
• c.Photosynthesis by the primary consumer
• d.Movement and muscle contraction by the primary consumer

• a.All energy is stored as biomass in the next trophic level.
• b.Consumers convert all food energy into new body tissue for growth.
• c.Producers capture nearly all of the light energy that reaches them.
• d.Most energy is lost as heat to the environment during respiration.

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