How much phosphorus is required by an adult man per day?
Correct answer: C. 800 mg
- A. 500 mg
- B. 400 mg
- C. 800 mg
- D. 1800 mg
Explanation
Phosphorus is crucial for numerous bodily functions, including the formation of bones and teeth, and it plays a role in how the body uses carbohydrates and fats. The recommended daily intake for phosphorus for a healthy adult is between 800mg and 1200mg. Option C, 800 mg, falls within this range, making it the correct answer. Options A and B (500 mg and 400 mg) are below the recommended intake and could potentially lead to deficiency, while Option D (1800 mg) is above the recommended range and could pose health risks if consumed regularly.
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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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