#biology exam practice

VERNALIZATION & FLOWERING+PYQS

FLC gene encodes a:

That points to C: MADS-box protein. Compared with the other options, MADS-box protein is the one that correctly describes the VERNALIZATION & FLOWERING concept. The wrong ones are A) bZIP protein; B) MYB protein; D) Homeobox protein. 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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PSS- Sec-F-Transport

During plasmolysis, which structure retracts from the cell wall?

Correct option is C, Protoplast. In PSS- Sec-F-Transport problems like this, the accurate statement is Protoplast; the others are common mix-ups. Not these: A) Cell wall; B) Tonoplast; D) Middle lamella. 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

Increase in solute concentration affects water potential by:

Answer: C) Lowering ψw. For PSS- Sec-F-Transport, remember the key idea and you’ll land on this option; the distractors usually swap cause and effect or confuse similar terms. Avoid: A) Increasing ψw; B) Making ψw less negative; D) No effect. 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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PSS- Sec-F-Transport

Major factors contributing to water potential (ψw) include:

Go with B — ψs, ψp and ψg. Under PSS- Sec-F-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) ψs and ψp only; C) ψp and ψg only; D) ψs and ψm only. 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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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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PSS- Sec-F-Transport

Asymmetric cell division in plants is best exemplified by:

Pick C: First mitotic division of microspore. Thinking through PSS- Sec-F-Transport step by step rules out the lookalikes and leaves First mitotic division of microspore. Skip these: A) Formation of guard cells; B) Division in root elongation zone; D) Division of megaspore. 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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ABC MODEL+PYQS

Which genes constitute class A in ABC model?

That points to C: AP1 and AP2. Compared with the other options, AP1 and AP2 is the one that correctly describes the ABC MODEL concept. The wrong ones are A) AP3 and PI; B) AG only; D) AP2 and AG. 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

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 POTENTIAL+PYQS

Osmotic potential is independent of:

Nature of solute (B) is correct here. This is core WATER POTENTIAL: once you know the definition or pathway step, Nature of solute is the clear fit. The wrong ones are A) Solute concentration; C) Temperature; D) Pressure. 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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WATER POTENTIAL+PYQS

Matric potential (Ψm) is significant in:

C fits best: Dry soils and seeds. Keep the WATER POTENTIAL basics straight and Dry soils and seeds stands out as the precise answer. Avoid: A) Well-watered cells; B) Xylem sap; D) Phloem sap. 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

Water potential is sum of following components:

Go with C — Ψs + Ψp + Ψg + Ψm. 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) Ψs + Ψp; B) Ψg + Ψm; D) Ψd only. 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

Which part of plant has most negative water potential?

That points to D: Atmosphere. Compared with the other options, Atmosphere is the one that correctly describes the WATER POTENTIAL concept. The wrong ones are A) Root; B) Stem; C) Leaf. 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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