Ethylene

Ethylene

Ethylene promotes senescence and:

Answer: B) Leaf abscission. For Ethylene, remember the key idea and you’ll land on this option; the distractors usually swap cause and effect or confuse similar terms. Avoid: A) Cell division; C) Photosynthesis; D) Dormancy. 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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Ethylene

Ethylene causes downward bending of leaves called:

Epinasty (B) is correct here. This is core Ethylene: once you know the definition or pathway step, Epinasty is the clear fit. The wrong ones are A) Hyponasty; C) Nyctinasty; D) Seismonasty. 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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Ethylene

Non-climacteric fruits are characterized by:

Correct option is C, Stable ethylene level. In Ethylene problems like this, the accurate statement is Stable ethylene level; the others are common mix-ups. Not these: A) Ethylene autocatalysis; B) Respiratory burst; D) Rapid ripening. 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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Ethylene

Climacteric fruits show:

Answer: B) Sudden ethylene burst. For Ethylene, remember the key idea and you’ll land on this option; the distractors usually swap cause and effect or confuse similar terms. Avoid: A) No rise in respiration; C) No ethylene synthesis; D) Delayed ripening. 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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Ethylene

Ethylene insensitive mutants include:

Pick B: etr1. Thinking through Ethylene step by step rules out the lookalikes and leaves etr1. Skip these: A) ctr1; C) ebf1 ebf2; D) ein3 overexpression. 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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Ethylene

Mutant showing constitutive triple response is:

Go with C — ctr1. Under Ethylene, 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) etr1; B) ein2; D) ebf1. 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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Ethylene

Triple response includes all EXCEPT:

C fits best: Enhanced root elongation. Keep the Ethylene basics straight and Enhanced root elongation stands out as the precise answer. Avoid: A) Reduced hypocotyl elongation; B) Radial swelling; D) Apical hook formation. 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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Ethylene

Classic bioassay for ethylene is:

B fits best: Triple response. Keep the Ethylene basics straight and Triple response stands out as the precise answer. Avoid: A) Coleoptile curvature; C) Leaf epinasty; D) Fruit ripening. 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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Ethylene

Ethylene signaling pathway is derived from:

Answer: C) Two component system. For Ethylene, remember the key idea and you’ll land on this option; the distractors usually swap cause and effect or confuse similar terms. Avoid: A) MAPK pathway; B) Calcium signaling; D) Hormone receptor pathway. 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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Ethylene

EBF1 and EBF2 proteins function in:

EIN3 degradation (C) is correct here. This is core Ethylene: once you know the definition or pathway step, EIN3 degradation is the clear fit. The wrong ones are A) Ethylene synthesis; B) Ethylene perception; D) ACC formation. 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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Ethylene

EIN3 functions as:

Go with C — Transcription factor. Under Ethylene, 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) Kinase; B) Receptor; D) Transporter. 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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Ethylene

EIN2 is localized to:

Correct option is C, ER membrane. In Ethylene problems like this, the accurate statement is ER membrane; the others are common mix-ups. Not these: A) Nucleus; B) Cytosol; D) Chloroplast. 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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