WATER POTENTIAL+PYQS

WATER POTENTIAL+PYQS

Water movement in soil-plant-atmosphere continuum occurs only if Ψ:

Pick B: In specialized tissues. Thinking through WATER POTENTIAL step by step rules out the lookalikes and leaves In specialized tissues. Skip these: A) In all cells equally; C) Only in roots; D) Only in leaves. For hormones and genes, match the molecule or gene to its real role, not a neighboring pathway.

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

Pure water in open beaker has Ψp equal to:

Correct option is B, 0 MPa. In WATER POTENTIAL problems like this, the accurate statement is 0 MPa; the others are common mix-ups. Not these: A) 1 MPa; C) -1 MPa; D) Variable. 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

Higher solute concentration inside cell causes:

That points to C: Water inflow and turgor. Compared with the other options, Water inflow and turgor is the one that correctly describes the WATER POTENTIAL concept. The wrong ones are A) Water to move out; B) Decrease in Ψp; D) Cell death. 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

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

DPD (Diffusion Pressure Deficit) refers to:

B fits best: Difference in diffusion pressure from pure water. Keep the WATER POTENTIAL basics straight and Difference in diffusion pressure from pure water stands out as the precise answer. Avoid: A) Total water potential; C) Osmotic pressure; D) Turgor pressure. 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.

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WATER POTENTIAL+PYQS

Water potential of saline soil is mainly affected by:

Ψs (C) is correct here. This is core WATER POTENTIAL: once you know the definition or pathway step, Ψs is the clear fit. The wrong ones are A) Ψp; B) Ψg; D) Ψm. If the topic is about gradients or potentials, water/solutes move from higher to lower of the relevant quantity.

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

Osmotic potential is independent of:

Nature of solute (B) is correct here. This is core WATER POTENTIAL: once you know the definition or pathway step, Nature of solute is the clear fit. The wrong ones are A) Solute concentration; C) Temperature; D) Pressure. If the topic is about gradients or potentials, water/solutes move from higher to lower of the relevant quantity.

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

Matric potential arises due to:

Go with C — Binding of water to surfaces. 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) Solute dissolution; B) Hydrostatic pressure; D) Gravity. 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

Matric potential (Ψm) is significant in:

C fits best: Dry soils and seeds. Keep the WATER POTENTIAL basics straight and Dry soils and seeds stands out as the precise answer. Avoid: A) Well-watered cells; B) Xylem sap; D) Phloem sap. 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.

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WATER POTENTIAL+PYQS

At cellular level, gravitational potential is:

Correct option is C, Negligible. In WATER POTENTIAL problems like this, the accurate statement is Negligible; the others are common mix-ups. Not these: A) Maximum; B) Dominant; D) Positive. 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

Gravitational potential (Ψg) depends on:

Answer: B) Height of water column. 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) Solute concentration; C) Temperature; D) Membrane permeability. 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

A plant wilts when turgor pressure becomes:

Zero (C) is correct here. This is core WATER POTENTIAL: once you know the definition or pathway step, Zero is the clear fit. The wrong ones are A) Maximum; B) Negative; D) Positive. If the topic is about gradients or potentials, water/solutes move from higher to lower of the relevant quantity.

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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