#plant water relations MCQ

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

Solute potential (Ψs) is always:

The right choice is C: Negative. In WATER POTENTIAL, that matches how the process or concept actually works — the other choices mix up related ideas or use the wrong mechanism. Skip these: A) Positive; B) Zero; D) Equal to Ψp. A quick check: if an option needs energy, pumps, or the opposite direction of movement, ask whether that really applies.

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

Addition of solute to water causes water potential to:

That points to C: Decrease. Compared with the other options, Decrease is the one that correctly describes the WATER POTENTIAL concept. The wrong ones are A) Increase; B) Become positive; D) Remain unchanged. 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 of pure water at standard conditions is:

Go with C — Zero. 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) Positive; B) Negative; D) Variable. 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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