#strigolactones

Phytohormone ALL PYQS

Strigolactone‑deficient mutants show:

Answer: B) Enhanced shoot branching. For Phytohormone ALL, remember the key idea and you’ll land on this option; the distractors usually swap cause and effect or confuse similar terms. Avoid: A) Reduced branching; C) Early flowering; D) Dwarfism. 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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Phytohormone ALL PYQS

Strigolactones induce hyphal branching of:

Go with B — AM fungi. Under Phytohormone ALL, 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) Rhizobia; C) Pathogenic fungi; D) Endophytes. 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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Striglactone

Strigolactones belong to which hormone category?

Correct option is C, Lipophilic hormones. In Striglactone problems like this, the accurate statement is Lipophilic hormones; the others are common mix-ups. Not these: A) Hydrophilic; B) Peptide hormones; D) Gas hormones. 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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Striglactone

Strigolactones are important under which nutrient deficiency?

Correct option is C, Phosphate. In Striglactone problems like this, the accurate statement is Phosphate; the others are common mix-ups. Not these: A) Nitrogen; B) Potassium; D) Iron. 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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Striglactone

Strigolactones reduce formation of:

That points to C: Adventitious roots. Compared with the other options, Adventitious roots is the one that correctly describes the Striglactone concept. The wrong ones are A) Primary roots; B) Root hairs; D) Lateral roots. 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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Striglactone

GR24 treatment can rescue phenotype of:

The right choice is B: SL-deficient mutants. In Striglactone, that matches how the process or concept actually works — the other choices mix up related ideas or use the wrong mechanism. Skip these: A) SL-insensitive mutants; C) Auxin mutants; D) GA mutants. 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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Striglactone

Strigolactone-deficient mutants show:

Correct option is C, Excessive branching. In Striglactone problems like this, the accurate statement is Excessive branching; the others are common mix-ups. Not these: A) Reduced branching; B) Normal branching; D) No roots. 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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Striglactone

Strigolactones promote symbiosis with:

That points to C: Arbuscular mycorrhizal fungi. Compared with the other options, Arbuscular mycorrhizal fungi is the one that correctly describes the Striglactone concept. The wrong ones are A) Rhizobium only; B) Ectomycorrhiza; D) Lichens. 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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Striglactone

Auxin influences strigolactone action by:

The right choice is B: Stimulating SL synthesis. In Striglactone, that matches how the process or concept actually works — the other choices mix up related ideas or use the wrong mechanism. Skip these: A) Inhibiting SL synthesis; C) Blocking SL transport; D) Degrading SLs. 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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Striglactone

BRC1 gene activated by strigolactones encodes:

Pick C: Transcription factor. Thinking through Striglactone step by step rules out the lookalikes and leaves Transcription factor. Skip these: A) Receptor; B) Enzyme; D) Transporter. 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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Striglactone

Strigolactones are transported mainly via:

B fits best: Xylem. Keep the Striglactone basics straight and Xylem stands out as the precise answer. Avoid: A) Phloem; C) Diffusion only; D) Symplast. 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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Striglactone

Primary site of strigolactone synthesis is:

Roots (B) is correct here. This is core Striglactone: once you know the definition or pathway step, Roots is the clear fit. The wrong ones are A) Leaves; C) Flowers; D) Seeds. 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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