#water transport in plants

PSS- Sec-F-Transport

Trade-off between vessel diameter and stem strength affects:

Correct option is B, Hydraulic conductance. In PSS- Sec-F-Transport problems like this, the accurate statement is Hydraulic conductance; the others are common mix-ups. Not these: A) Photosynthesis; C) Transpiration rate; D) Stomatal density. 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 TRANSPORT+PYQS

Aquaporins are involved in:

The right choice is C: Facilitated water transport. In WATER TRANSPORT, that matches how the process or concept actually works — the other choices mix up related ideas or use the wrong mechanism. Skip these: A) Ion transport; B) Sugar transport; D) Active pumping. 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 TRANSPORT+PYQS

Xylem vessels are dead at maturity to:

That points to C: Reduce resistance to water flow. Compared with the other options, Reduce resistance to water flow is the one that correctly describes the WATER TRANSPORT concept. The wrong ones are A) Store nutrients; B) Conduct food; D) Increase metabolism. 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 TRANSPORT+PYQS

Transpiration pull generates which type of pressure?

The right choice is C: Negative hydrostatic. In WATER TRANSPORT, 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 hydrostatic; B) Zero pressure; D) Osmotic. 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 TRANSPORT+PYQS

Negative pressure developed in xylem is also called:

The right choice is C: Tension. In WATER TRANSPORT, that matches how the process or concept actually works — the other choices mix up related ideas or use the wrong mechanism. Skip these: A) Turgor; B) Osmotic pressure; D) Root pressure. 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 TRANSPORT+PYQS

Adhesion in xylem refers to attraction between:

Correct option is B, Water and xylem wall. In WATER TRANSPORT problems like this, the accurate statement is Water and xylem wall; the others are common mix-ups. Not these: A) Water molecules only; C) Xylem elements; D) Solute molecules. 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 TRANSPORT+PYQS

Cohesion–tension theory explains water transport based on:

That points to C: Physical properties of water. Compared with the other options, Physical properties of water is the one that correctly describes the WATER TRANSPORT concept. The wrong ones are A) Living cell activity; B) Osmotic pumping; D) Root metabolism. 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 TRANSPORT+PYQS

Root pressure becomes insignificant when:

B fits best: Transpiration rate is high. Keep the WATER TRANSPORT basics straight and Transpiration rate is high stands out as the precise answer. Avoid: A) Soil water potential is high; C) At night; D) Humidity is high. 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

Negative pressure potential in xylem is known as:

Tension (C) is correct here. This is core WATER POTENTIAL: once you know the definition or pathway step, Tension is the clear fit. The wrong ones are A) Turgor; B) Osmosis; D) Diffusion. 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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