The ultimate source of energy in an ecosystem is
Correct answer: B. Sun
- A. Photosynthesis
- B. Sun
- C. Plants
- D. Water
Explanation
Sun is the ultimate source of energy because it is the source of most of the energies on Earth. It provides solar energy, it is responsible for photosynthesis in plants and also provides vitamin D to humans.
This question appeared on the UHS MDCAT 2016 paper, which you can sit online with every answer explained.
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About Ecosystems
An ecosystem consists of organisms interacting with one another and with abiotic factors such as light, water, soil and temperature. The topic covers populations and communities, food chains and webs, trophic levels, ecological pyramids, energy flow, nutrient cycles and ecological succession.
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