#water potential MCQ

PSS- Sec-F-Transport

Increase in solute concentration affects water potential by:

Answer: C) Lowering ψw. For PSS- Sec-F-Transport, remember the key idea and you’ll land on this option; the distractors usually swap cause and effect or confuse similar terms. Avoid: A) Increasing ψw; B) Making ψw less negative; D) No effect. Name the process first, then pick the option that describes it — don’t reverse cause and effect.

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

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WATER POTENTIAL+PYQS

If cell A has Ψ = -0.345 MPa and cell B has Ψ = -0.234 MPa, water moves:

That points to B: B to A. Compared with the other options, B to A is the one that correctly describes the WATER POTENTIAL concept. The wrong ones are A) A to B; C) Both ways; D) No movement. If you’re stuck, eliminate anything that contradicts a basic fact you already know for this topic.

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

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WATER POTENTIAL+PYQS

Water potential in plant system can never be:

Correct option is C, Positive. In WATER POTENTIAL problems like this, the accurate statement is Positive; the others are common mix-ups. Not these: A) Negative; B) Zero; D) Low. Tissue transport questions usually turn on xylem vs phloem, living vs dead cells, or source vs sink.

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

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WATER POTENTIAL+PYQS

Which part of plant has most negative water potential?

That points to D: Atmosphere. Compared with the other options, Atmosphere is the one that correctly describes the WATER POTENTIAL concept. The wrong ones are A) Root; B) Stem; C) Leaf. If you’re stuck, eliminate anything that contradicts a basic fact you already know for this topic.

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

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WATER POTENTIAL+PYQS

Concept of water potential was proposed by:

Go with B — Slatyer and Taylor. Under WATER POTENTIAL, this is the standard explanation you’d use in class: it names the real driver or definition, while the rest are nearby but wrong. Not these: A) Van’t Hoff; C) Meyer; D) Fick. When two options sound similar, choose the one that matches the textbook definition most tightly.

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

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WATER POTENTIAL+PYQS

Unit of water potential is:

Answer: B) Pascal. For WATER POTENTIAL, remember the key idea and you’ll land on this option; the distractors usually swap cause and effect or confuse similar terms. Avoid: A) Joule; C) Atmosphere; D) Kelvin. Name the process first, then pick the option that describes it — don’t reverse cause and effect.

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

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