Question

Guard cell movement furnishes an example of

• A. Turgor movement
• B. Tactic movement
• C. Nastic movement
• D. Cyclosis movement

Answer 1

The correct option is A Turgor movement

Stomatal pore opens and closes due to change in turgidity of guard cells. Nastic movements are associated with growth and cyclosis is streaming movement of cytoplasm within the cell. Tactic and nastic movements are differentiated based on the direction of stimulus. Nastic movement are independent of direction but tactic movement are oriented towards a certain direction.