In plants, which sugar is transported from source to sink through sieve tubes?
Correct answer: B. Sucrose
- A. Glucose
- B. Sucrose
- C. Fructose
- D. None of the above
Explanation
Factual recall;Glucose is the monosaccharide, that makes up the disaccharide sucrose along with fructose, whereas sucrose is the form, in which sugar is transported from source to sink. Sucrose is broken down to its constituents and then used by tissue cells.
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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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