Cytokinin

Cytokinin

Cytokinins delay leaf senescence by:

That points to B: Inhibiting chlorophyll degradation. Compared with the other options, Inhibiting chlorophyll degradation is the one that correctly describes the Cytokinin concept. The wrong ones are A) Promoting ABA; C) Increasing ethylene; D) Reducing photosynthesis. 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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Cytokinin

KISS ME DEADLY (KMD) proteins regulate cytokinin response by:

Degrading ARR-B (B) is correct here. This is core Cytokinin: once you know the definition or pathway step, Degrading ARR-B is the clear fit. The wrong ones are A) Activating ARR-B; C) Degrading ARR-A; D) Activating IPT. 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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Cytokinin

Type-A ARRs mainly function as:

Answer: B) Negative feedback regulators. For Cytokinin, remember the key idea and you’ll land on this option; the distractors usually swap cause and effect or confuse similar terms. Avoid: A) Positive regulators; C) Receptors; D) Kinases. 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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Cytokinin

Type-B ARRs primarily act as:

That points to B: Transcription factors. Compared with the other options, Transcription factors is the one that correctly describes the Cytokinin concept. The wrong ones are A) Negative regulators; C) Receptors; D) Enzymes. 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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Cytokinin

AHP proteins function as:

Go with C — Phosphotransfer proteins. Under Cytokinin, 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) Receptors; B) Kinases; D) Transcription factors. 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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Cytokinin

Cytokinin signaling is derived from:

Answer: C) Two-component system. For Cytokinin, 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) Ubiquitin 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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Cytokinin

CRE1 is also known as:

Answer: D) WOL. For Cytokinin, remember the key idea and you’ll land on this option; the distractors usually swap cause and effect or confuse similar terms. Avoid: A) AHK1; B) AHK2; C) AHK3. 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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Cytokinin

Cytokinin receptor contains which ligand-binding domain?

CHASE (B) is correct here. This is core Cytokinin: once you know the definition or pathway step, CHASE is the clear fit. The wrong ones are A) PAS; C) bZIP; D) WD40. 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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Cytokinin

Cytokinin signaling receptors belong to:

Histidine kinases (C) is correct here. This is core Cytokinin: once you know the definition or pathway step, Histidine kinases is the clear fit. The wrong ones are A) GPCR family; B) LRR kinases; D) Serine kinases. 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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Cytokinin

Arabidopsis cytokinin oxidase genes are:

Pick A: AtCKX1 and AtCKX2. Thinking through Cytokinin step by step rules out the lookalikes and leaves AtCKX1 and AtCKX2. Skip these: B) AHK2 and AHK3; C) ARR1 and ARR2; D) IPT3 and IPT7. 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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Cytokinin

Enzyme responsible for cytokinin degradation is:

Pick B: CK oxidase. Thinking through Cytokinin step by step rules out the lookalikes and leaves CK oxidase. Skip these: A) Peroxidase; C) IAA oxidase; D) Dehydrogenase. 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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Cytokinin

Irreversible inactivation of cytokinin occurs by:

That points to B: N-glycosylation. Compared with the other options, N-glycosylation is the one that correctly describes the Cytokinin concept. The wrong ones are A) O-glycosylation; C) Dephosphorylation; D) Reduction. 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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