7 public questions tagged with this topic.
Abscisic acid induces dormancy. Cytokinin overcomes apical dominance, while auxin promotes rooting. Ethylene accelerates senescence, not delays it.
Ref: NCERT Class 11 Biology Chapter 13: Plant Growth and Development Plant Growth Regulators - Cytokinins Ethylene and Abscisic Acid
Gibberellins break seed dormancy; they do not induce it. Abscisic acid (ABA) induces seed dormancy.
Ref: NCERT Class 11 Biology Chapter 13: Plant Growth and Development Plant Growth Regulators - Cytokinins Ethylene and Abscisic Acid
Answer: B) A hypothetical flowering stimulus. 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) A plant hormone already isolated; C) A transcription factor; D) A phytochrome. 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.
B fits best: Devernalization. Keep the VERNALIZATION & FLOWERING basics straight and Devernalization stands out as the precise answer. Avoid: A) Stratification; C) Photoperiodism; D) Thermoperiodism. 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.
Competence to flower (B) is correct here. This is core VERNALIZATION & FLOWERING: once you know the definition or pathway step, Competence to flower is the clear fit. The wrong ones are A) Immediate flowering; C) Seed dormancy; D) Stem elongation. 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.
Answer: B) Xylem by bulk flow. For WATER 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) Phloem by diffusion; C) Cortex by osmosis; D) Endodermis by diffusion. 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.
C fits best: Higher than medium. Keep the MINERAL Transport basics straight and Higher than medium stands out as the precise answer. Avoid: A) Equal to medium; B) Lower than medium; D) Absent. 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.
