#transport in plants

WATER TRANSPORT+PYQS

Symplastic pathway involves movement through:

The right choice is C: Plasmodesmata. 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) Cell walls; B) Intercellular spaces; D) Xylem. 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

Water absorption by roots is mostly:

B fits best: Passive. Keep the WATER TRANSPORT basics straight and Passive stands out as the precise answer. Avoid: A) Active; C) Energy-dependent; D) Carrier mediated. 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 TRANSPORT+PYQS

Guttation occurs due to:

Go with C — Root pressure. 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) Transpiration pull; B) Capillary action; D) Diffusion. 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

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 TRANSPORT+PYQS

Maximum magnitude of root pressure is approximately:

That points to B: 0.5–0.6 MPa. Compared with the other options, 0.5–0.6 MPa is the one that correctly describes the WATER TRANSPORT concept. The wrong ones are A) 0.05 MPa; C) 5 MPa; D) 10 MPa. 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 is generated due to:

Correct option is B, Active accumulation of mineral ions in xylem. In WATER TRANSPORT problems like this, the accurate statement is Active accumulation of mineral ions in xylem; the others are common mix-ups. Not these: A) Passive diffusion of ions; C) Evaporation from leaves; D) Capillary rise. 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

Ascent of sap refers to:

The right choice is B: Upward movement of water through xylem. 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) Downward movement of solutes; C) Lateral movement in cortex; D) Movement through phloem. 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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MINERAL Transport+PYQS

Long distance transport of mineral ions occurs through:

That points to C: Xylem. Compared with the other options, Xylem is the one that correctly describes the MINERAL Transport concept. The wrong ones are A) Phloem; B) Cortex; D) Cambium. 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

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

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

Water potential (Ψw) is defined as:

Pick A: Free energy of water per unit volume. Thinking through WATER POTENTIAL step by step rules out the lookalikes and leaves Free energy of water per unit volume. Skip these: B) Total water content in cell; C) Osmotic pressure of solution; D) Rate of water diffusion. 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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