Water enters root hair from soil mainly by
AOsmosis through the cell membrane
BActive uptake using respiration energy
CCapillary action inside xylem vessels
DDiffusion of gases through stomata
Answer & Solution
Correct answer: A. Osmosis through the cell membrane
1. Soil water is dilute; root hair cytoplasm has dissolved solutes.
2. Water passes a semi-permeable membrane from dilute to concentrated side.
3. This passive movement is called osmosis.
4. So option A is correct.
_Source: Selina Concise Biology Class 8, Ch on Transport in Plants (Mistral OCR'd PDF), Mechanism of Absorption_
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