The complex force of photosynthesis can be studied by the use of one of the following isotopes :
Correct answer: D. 6O16
- A. 6C14
- B. 1H2
- C. 2He4
- D. 6O16
Explanation
Oxygen-16 is the ideal isotope for studying photosynthesis because it allows for precise measurements of oxygen uptake and flow during the process. Carbon-14, Hydrogen-2, and Helium-4 are not commonly used for this specific purpose, making them incorrect choices for this question.
This question appeared on the ETEA MDCAT 2009 paper, which you can sit online with every answer explained.
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About Plant Nutrition and Transport
Plants require macronutrients and micronutrients for growth, and mineral deficiencies produce recognizable symptoms. Transport involves water and minerals through xylem by transpiration pull, cohesion and adhesion, while phloem translocates sugars from sources to sinks. Root pressure and transpiration are distinct mechanisms.
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