Multiple Choice
What is the original source of almost all the energy in most ecosystems?
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52. Ecosystems
Energy Flow Through Ecosystems
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
In an ecosystem, what percentage of energy captured by primary producers is typically lost as respiration?
A
30%
B
70%
C
10%
D
50%
Verified step by step guidance1
Understand the role of primary producers in an ecosystem. Primary producers, such as plants and algae, capture energy from the sun through photosynthesis.
Recognize that not all energy captured by primary producers is used for growth or passed on to consumers. A significant portion is lost as respiration, which is the process by which organisms convert glucose and oxygen into energy, releasing carbon dioxide and water.
Learn that respiration is a necessary process for maintaining the life functions of the producers, but it results in energy loss from the ecosystem.
Identify that typically, about 50% of the energy captured by primary producers is lost as respiration. This means that only the remaining energy is available for growth and consumption by herbivores.
Consider the implications of energy loss in ecosystems. This energy loss affects the energy available to higher trophic levels, influencing the structure and dynamics of the ecosystem.
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