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#plant photoreceptors

38 public questions tagged with this topic.

Which phototropin mainly controls chloroplast avoidance response?

That points to B: PHOT2. Compared with the other options, PHOT2 is the one that correctly describes the Phototropin+All concept. The wrong ones are A) PHOT1; C) CRY1; D) ZTL. 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.

Phototropin contains how many LOV domains?

Two (B) is correct here. This is core Phototropin+All: once you know the definition or pathway step, Two is the clear fit. The wrong ones are A) One; C) Three; D) Four. 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.

Phototropin-mediated stem bending occurs due to redistribution of:

Go with B — Auxin. Under Phototropin+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) Cytokinin; C) Gibberellin; 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.

PHOT2 is mainly required for phototropism under:

B fits best: High light. Keep the Phototropin+All basics straight and High light stands out as the precise answer. Avoid: A) Low light; C) Red light; D) Darkness. 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.

PHOT1 primarily mediates phototropism under:

That points to C: Low and high blue light. Compared with the other options, Low and high blue light is the one that correctly describes the Phototropin+All concept. The wrong ones are A) Only low light; B) Only high light; D) Red light. 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.

Angiosperms contain how many phototropin genes?

Pick B: Two. Thinking through Phototropin+All step by step rules out the lookalikes and leaves Two. Skip these: A) One; C) Three; D) Four. 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.

Phototropin receptors are mainly localized on:

C fits best: Plasma membrane. Keep the Phototropin+All basics straight and Plasma membrane stands out as the precise answer. Avoid: A) Nucleus; B) Chloroplast envelope; D) Cell wall. 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.

Phototropin is classified as:

The right choice is B: Flavoprotein kinase. In Phototropin+All, that matches how the process or concept actually works — the other choices mix up related ideas or use the wrong mechanism. Skip these: A) Phytochrome; C) Steroid receptor; D) Ion channel. 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.

Phototropins are plant photoreceptors sensitive to:

Pick C: Blue light. Thinking through Phototropin+All step by step rules out the lookalikes and leaves Blue light. Skip these: A) Red light; B) Far-red light; D) UV-B light. 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.

FT protein regulated by cryptochrome signaling acts as:

That points to B: Florigen. Compared with the other options, Florigen is the one that correctly describes the cryptochrome concept. The wrong ones are A) Photoreceptor; C) Repressor; D) Enzyme. 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.

Cryptochrome functions mainly in regulation of:

Photomorphogenesis (B) is correct here. This is core cryptochrome: once you know the definition or pathway step, Photomorphogenesis is the clear fit. The wrong ones are A) Photosynthesis; C) Respiration; D) Transpiration. 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.

CRY3 protein is localized primarily in:

Correct option is B, Chloroplasts and mitochondria. In cryptochrome problems like this, the accurate statement is Chloroplasts and mitochondria; the others are common mix-ups. Not these: A) Nucleus only; C) Plasma membrane; D) Cell wall. 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.