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#phytochrome signalling MCQ

2 public questions tagged with this topic.

PHYTOCHROME+PYQS

In light, Pfr binding to PIFs results in:

Pick B: Degradation of PIFs. Thinking through PHYTOCHROME step by step rules out the lookalikes and leaves Degradation of PIFs. Skip these: A) Activation of PIFs; C) Nuclear export of phytochrome; D) Inhibition of HY5. 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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PSS-Sec-E-Sensory biology

Pfr induces degradation of which transcription factors?

The right choice is C: PIFs. In PSS-Sec-E-Sensory biology, that matches how the process or concept actually works — the other choices mix up related ideas or use the wrong mechanism. Skip these: A) HY5; B) COP1; D) LAF1. 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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