#plant anatomy MCQ

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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PSS- Sec-F-Transport

Vessel elements are generally:

The right choice is C: Shorter and wider than tracheids. In PSS- Sec-F-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) Narrower than tracheids; B) Absent in angiosperms; D) Present only in gymnosperms. 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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PSS- Sec-F-Transport

Xylem tracheids are best described as:

The right choice is C: Elongated tapered cells. In PSS- Sec-F-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) Short and wide; B) Living cells; D) Non-conducting cells. 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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PSS- Sec-F-Transport

Casparian strip primarily functions to:

Correct option is B, Block apoplastic transport. In PSS- Sec-F-Transport problems like this, the accurate statement is Block apoplastic transport; the others are common mix-ups. Not these: A) Block symplastic transport; C) Enhance diffusion; D) Create passage cells. 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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PSS- Sec-F-Transport

Symmetric division in stomatal development occurs during formation of:

C fits best: Guard mother cell. Keep the PSS- Sec-F-Transport basics straight and Guard mother cell stands out as the precise answer. Avoid: A) Meristemoid; B) SLGC; D) Protodermal cell. 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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STOMATA MOVEMENT +PYQS

Guard cells of grasses are characteristically:

Correct option is C, Dumbbell-shaped. In STOMATA MOVEMENT problems like this, the accurate statement is Dumbbell-shaped; the others are common mix-ups. Not these: A) Kidney-shaped; B) Circular; D) Rectangular. 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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PHLOEM TRANSLOCATION+PYQS

Companion cells are connected to sieve tube elements by:

Answer: C) Plasmodesmata. For PHLOEM TRANSLOCATION, remember the key idea and you’ll land on this option; the distractors usually swap cause and effect or confuse similar terms. Avoid: A) Pits; B) Casparian strips; D) Middle lamella. Name the process first, then pick the option that describes it — don’t reverse cause and effect.

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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PHLOEM TRANSLOCATION+PYQS

P-proteins mainly function in phloem to:

C fits best: Seal damaged sieve elements. Keep the PHLOEM TRANSLOCATION basics straight and Seal damaged sieve elements stands out as the precise answer. Avoid: A) Transport sucrose; B) Generate ATP; D) Synthesize starch. 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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PHLOEM TRANSLOCATION+PYQS

Which phloem cell lacks nucleus at maturity?

Go with C — Sieve tube element. Under PHLOEM TRANSLOCATION, 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) Companion cell; B) Phloem parenchyma; D) Transfer cell. 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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PHLOEM TRANSLOCATION+PYQS

Sieve tube elements are characteristic of:

The right choice is B: Angiosperms. In PHLOEM TRANSLOCATION, that matches how the process or concept actually works — the other choices mix up related ideas or use the wrong mechanism. Skip these: A) Gymnosperms; C) Pteridophytes; D) Bryophytes. 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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PHLOEM TRANSLOCATION+PYQS

Phloem is considered a living tissue because of the presence of:

The right choice is C: Sieve elements. In PHLOEM TRANSLOCATION, that matches how the process or concept actually works — the other choices mix up related ideas or use the wrong mechanism. Skip these: A) Vessels; B) Tracheids; D) Fibres. 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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BASICS of PLANT+PYQS

Primary function of phloem parenchyma is:

Pick B: In specialized tissues. Thinking through BASICS of PLANT step by step rules out the lookalikes and leaves In specialized tissues. Skip these: A) In all cells equally; C) Only in roots; D) Only in leaves. 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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