#cohesion-tension theory

WATER TRANSPORT+PYQS

Which property of water allows maintenance of continuous water column?

Go with C — Cohesion. Under WATER TRANSPORT, 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) Viscosity; B) Surface tension; D) Density. 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 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 between water molecules is due to:

The right choice is C: Hydrogen bonding. 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) Ionic bonds; B) Covalent bonds; D) Van der Waals forces. 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

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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