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#root water uptake

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Water absorption by roots is mostly:

B fits best: Passive. Keep the WATER TRANSPORT basics straight and Passive stands out as the precise answer. Avoid: A) Active; C) Energy-dependent; D) Carrier mediated. Light and flowering items often hinge on which photoreceptor or day-length rule is in play.

Ref: Best CSIR NET Plant Physiology books: Master Unit 6 with Taiz & Zeiger and Salisbury & Ross. Crack Part C experimental questions with top textbooks.