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Pressure potential is ________

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in Biology – Class 11 by (272k points)
Pressure potential is ________

(a) constant

(b) zero

(c) positive

(d) negative

I got this question during a job interview.

My question is based upon Plant-Water Relations-2 in chapter Transport in Plants of Biology – Class 11

1 Answer

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Best answer
Right answer is (c) positive

To explain I would say: Pressure potential is usually positive but it causes negative potential in the xylem in order to enable water transport up the stem. Water potential of pure water is zero. Solute potential is negative. Gravitational and matrix potential remains relatively constant.

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