#biology practice question

VERNALIZATION & FLOWERING+PYQS

The effective temperature range for vernalization generally lies between:

Answer: B) 1–7°C. For VERNALIZATION & FLOWERING, remember the key idea and you’ll land on this option; the distractors usually swap cause and effect or confuse similar terms. Avoid: A) 10–25°C; C) 25–35°C; D) −10–0°C. 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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VERNALIZATION & FLOWERING+PYQS

Vernalization is an active metabolic process and therefore does NOT occur in:

Correct option is D, Dry seeds. In VERNALIZATION & FLOWERING problems like this, the accurate statement is Dry seeds; the others are common mix-ups. Not these: A) Hydrated seeds; B) Young seedlings; C) Shoot apical meristem. 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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VERNALIZATION & FLOWERING+PYQS

Vernalization is best defined as:

That points to B: Acceleration of flowering by prolonged cold exposure. Compared with the other options, Acceleration of flowering by prolonged cold exposure is the one that correctly describes the VERNALIZATION & FLOWERING concept. The wrong ones are A) Promotion of flowering by long days; C) Inhibition of flowering by cold; D) Induction of dormancy by cold. 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-E-Sensory biology

Photomorphogenesis is promoted by:

Pfr form (B) is correct here. This is core PSS-Sec-E-Sensory biology: once you know the definition or pathway step, Pfr form is the clear fit. The wrong ones are A) Pr form; C) Darkness; D) Ethylene. 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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PSS-Sec-E-Sensory biology

Which photoreceptor family evolved from bacterial DNA photolyases?

Correct option is B, Cryptochromes. In PSS-Sec-E-Sensory biology problems like this, the accurate statement is Cryptochromes; the others are common mix-ups. Not these: A) Phytochromes; C) Phototropins; D) UVR8. 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-E-Sensory biology

Cryptochromes are photoreceptors mainly for:

That points to B: Blue light. Compared with the other options, Blue light is the one that correctly describes the PSS-Sec-E-Sensory biology concept. The wrong ones are A) Red light; C) Far-red light; D) Green light. 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

Silicon contributes to plant function mainly by:

Pick C: Cell wall rigidity. Thinking through PSS- Sec-F-Transport step by step rules out the lookalikes and leaves Cell wall rigidity. Skip these: A) Photosynthesis; B) Protein synthesis; D) Ion balance. 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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PSS- Sec-F-Transport

Deficiency symptoms of immobile nutrients appear first in:

B fits best: Young leaves. Keep the PSS- Sec-F-Transport basics straight and Young leaves stands out as the precise answer. Avoid: A) Older leaves; C) Roots; D) All tissues. 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

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

Symplastic transport predominantly involves:

Go with C — Plasmodesmata. 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) Cell wall; B) Tonoplast; D) Xylem. 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

Casparian strip is impregnated mainly with

Answer: C) Suberin and lignin. 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) Cellulose; B) Pectin; D) Hemicellulose. 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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