#transport in plants

BOTANY

Which tissue in the vascular system is responsible for the transport of water and minerals?

Xylem is responsible for transporting water and minerals from roots to other parts of the plant. This follows from latest NCERT 2026-27 principle explaining the concept clearly for NEET students in simple steps as per rationalized syllabus.

Ref: NCERT Biology Textbook - Latest Edition for Academic Session 2026-27 (Botany section, Rationalized Textbook for Class XI and XII), Chapter: Biology - Botany portion (Latest NCERT Textbooks for Academic Session 2026-27 -

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BOTANY

Which plant tissue is responsible for the transport of water and minerals?

Xylem is responsible for the transport of water and minerals from the roots to other parts of the plant. This follows from NCERT principle where relation explains outcome clearly for students.

Ref: NCERT Biology Textbook for Class XI and XII (Botany section), Chapter: Biology - Botany portion covering relevant concept, Topic: Plant structure, physiology and applications.

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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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