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#plant photoreceptor MCQ

3 public questions tagged with this topic.

Dephosphorylation of phototropin in darkness is mediated by:

C fits best: Protein phosphatase 2A. Keep the Phototropin+All basics straight and Protein phosphatase 2A stands out as the precise answer. Avoid: A) Kinase; B) Proteasome; D) COP1. 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.

In darkness, phototropin kinase activity is:

Pick C: Inhibited. Thinking through Phototropin+All step by step rules out the lookalikes and leaves Inhibited. Skip these: A) Activated; B) Unchanged; D) Degraded. 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.

The HY4 gene was later renamed as:

C fits best: CRY1. Keep the cryptochrome basics straight and CRY1 stands out as the precise answer. Avoid: A) CRY2; B) CRY3; D) PHYA. 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.