Natural Science CLEP Prep Practice Exam

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Prepare for the CLEP Natural Science Exam with our comprehensive study materials and practice questions. Test your knowledge and ace the exam by mastering key concepts.

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How do plants obtain energy?

  1. By consuming other organisms

  2. By respiration

  3. By photosynthesis

  4. By fermentation

The correct answer is: By photosynthesis

Plants obtain energy through the process of photosynthesis, in which they use sunlight, water, and carbon dioxide to produce glucose (sugar) and oxygen. Option A is incorrect because plants are autotrophs and do not consume other organisms for energy. Option B is incorrect because respiration is a process that occurs in both plants and animals, but it does not provide energy for plants. Option D is incorrect because fermentation is an anaerobic process that does not produce energy for plants.

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