Transport in Plants — NEET/JEE Questions, Notes & Weightage
Class 11 Plant Physiology NEET weightage: Medium 0 questions
Covers diffusion, osmosis, water potential, the ascent of sap (cohesion-tension theory), and phloem transport (pressure-flow hypothesis). Water-potential numericals and the cohesion-tension mechanism are the most exam-relevant parts.
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Frequently asked questions
Are water-potential numericals common in NEET?
Yes — simple water-potential and osmotic-potential calculations appear periodically, so practising the formula (Ψw = Ψs + Ψp) rather than just reading the theory pays off.
What is the most-tested transport mechanism here?
The cohesion-tension-transpiration pull theory for xylem (ascent of sap) and the pressure-flow hypothesis for phloem are the two named mechanisms most likely to be asked directly.
Is this chapter linked to Mineral Nutrition?
Yes — both deal with plant transport systems and are often grouped together in revision and in back-to-back NEET questions.