Which of the following statements are correct about phloem translocation? I. It occurs from a source to a sink II. The source is where the photosynthetic products are synthesized III. The movement is driven by a pressure gradient produced due to differences in osmotic pressure between the source and the sink IV. Sieve plates maintain pressure gradient between the source and the sink by resisting flow along the sieve tubes
Correct answer: E. All are correct
- A. Only option I
- B. Only option II
- C. Both options I and II
- D. Both options II and IV
- E. All are correct
Explanation
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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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