About __________ % of photosynthesis is carried by terrestrial plants, while rest occurs in ocean, lakes, and ponds?
Correct answer: A. 10%
- A. 10%
- B. 20%
- C. 30%
- D. 40%
Explanation
About 10% of total photosynthesis is attributed to terrestrial plants, whereas aquatic plants, algae, and other aquatic photosynthetic organisms perform most of it. Students may choose 20% by focusing on the large land area covered by vegetation and ignoring the extensive photosynthetic activity in aquatic ecosystems.
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About Cellular Respiration
Cellular respiration releases energy from glucose through glycolysis, the link reaction, the Krebs cycle and the electron transport chain, producing ATP. The pathway differs in oxygen availability: aerobic respiration uses oxygen and yields more ATP, while anaerobic respiration produces much less ATP and forms lactic acid in muscles or ethanol and carbon dioxide in yeast.
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