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#stomatal opening

3 public questions tagged with this topic.

Phototropin+All PYQS

Blue-light induced stomatal opening is blocked if accumulation of which molecule is prevented?

C fits best: Zeaxanthin. Keep the Phototropin+All basics straight and Zeaxanthin stands out as the precise answer. Avoid: A) Carotene; B) Chlorophyll; D) Lutein. 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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STOMATA MOVEMENT +PYQS

Stomatal opening is maximum when leaf water potential is:

Correct option is C, High. In STOMATA MOVEMENT problems like this, the accurate statement is High; the others are common mix-ups. Not these: A) Low; B) Zero; D) Negative. 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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STOMATA MOVEMENT +PYQS

Driving force for water entry into guard cells during opening is:

Go with B — Decreased water potential. Under STOMATA MOVEMENT, 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) Increased water potential; C) Increased pressure potential; D) Reduced osmotic pressure. 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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