#biology MCQs

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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Jasmonic acid

TRY gene functions as:

The right choice is B: Negative regulator of trichomes. 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) Positive regulator of trichomes; C) JA receptor; D) JA enzyme. 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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Jasmonic acid

GL1, GL3, and TTG1 together form:

That points to B: Activation complex. Compared with the other options, Activation complex is the one that correctly describes the Jasmonic acid concept. The wrong ones are A) Repressor complex; C) SCF complex; D) MAPK complex. 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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Jasmonic acid

JA-induced trichome formation occurs in:

Arabidopsis (C) is correct here. This is core Jasmonic acid: once you know the definition or pathway step, Arabidopsis is the clear fit. The wrong ones are A) Rice; B) Maize; D) Wheat. 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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Jasmonic acid

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.

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Jasmonic acid

JA signaling is analogous to which hormone signaling?

Go with B — Auxin. 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) Cytokinin; C) Ethylene; D) ABA. 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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Jasmonic acid

Degradation of JAZ proteins occurs via:

26S proteasome (C) is correct here. This is core Jasmonic acid: once you know the definition or pathway step, 26S proteasome is the clear fit. The wrong ones are A) Lysosome; B) Autophagy; D) Peroxisome. 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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