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#jasmonic acid

15 public questions tagged with this topic.

COI1 is receptor for:

That points to C: Jasmonic acid. Compared with the other options, Jasmonic acid is the one that correctly describes the Phytohormone ALL concept. The wrong ones are A) Auxin; B) Gibberellin; D) Ethylene. 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.

Exogenous JA application generally causes:

Pick B: Root growth inhibition. Thinking through Jasmonic acid step by step rules out the lookalikes and leaves Root growth inhibition. Skip these: A) Root elongation; C) Shoot elongation; D) Delayed senescence. 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.

JA is involved in senescence mainly of:

Go with C — Flowers more than leaves. Under Jasmonic acid, 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) Roots; B) Leaves only; D) Seeds. 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.

JA deficient mutants show:

Answer: C) High susceptibility to insects. For Jasmonic acid, remember the key idea and you’ll land on this option; the distractors usually swap cause and effect or confuse similar terms. Avoid: A) Increased resistance to insects; B) Normal defense; D) Early flowering. 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.

JA accumulation increases in response to:

Correct option is C, Herbivory and wounding. In Jasmonic acid problems like this, the accurate statement is Herbivory and wounding; the others are common mix-ups. Not these: A) Cold only; B) Drought only; D) Light. 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.

JA-induced growth suppression helps in:

Defense resource allocation (B) is correct here. This is core Jasmonic acid: once you know the definition or pathway step, Defense resource allocation is the clear fit. The wrong ones are A) Cell elongation; C) Photosynthesis increase; D) Seed dormancy. 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.

JA conjugation with glucose forms:

C fits best: Jasmonyl-1-β-glucose. Keep the Jasmonic acid basics straight and Jasmonyl-1-β-glucose stands out as the precise answer. Avoid: A) JA-Ile; B) Me-JA; D) cis-jasmone. 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.

JA induces defense against:

Herbivores and necrotrophs (C) is correct here. This is core Jasmonic acid: once you know the definition or pathway step, Herbivores and necrotrophs is the clear fit. The wrong ones are A) Biotrophic pathogens only; B) Abiotic stress only; D) Viruses only. 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.

Conversion of OPDA to jasmonic acid occurs in:

Pick C: Peroxisome. Thinking through Jasmonic acid step by step rules out the lookalikes and leaves Peroxisome. Skip these: A) Chloroplast; B) Cytosol; D) Nucleus. 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.

12-oxo-phytodienoic acid (OPDA) is formed in:

The right choice is B: Chloroplast. In Jasmonic acid, that matches how the process or concept actually works — the other choices mix up related ideas or use the wrong mechanism. Skip these: A) Cytosol; C) Peroxisome; D) Nucleus. 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.

Lipoxygenase (LOX) acts on which substrate?

Answer: B) α-linolenic acid. For Jasmonic acid, remember the key idea and you’ll land on this option; the distractors usually swap cause and effect or confuse similar terms. Avoid: A) Linoleic acid; C) Oleic acid; D) Stearic acid. 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.

The first enzymatic step of JA biosynthesis occurs in:

C fits best: Chloroplast. Keep the Jasmonic acid basics straight and Chloroplast stands out as the precise answer. Avoid: A) Cytosol; B) Peroxisome; D) Nucleus. 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.