Question

Zig-zag movement is

• A. Hyponastic
• B. Nutational
• C. Both (A) and (B)
• D. None of the above

Answer 1

The correct option is B Nutational

Nutation is the bending movements executed by some plant organs such as stems, leaves, roots, etc, by which the part is inclined successively in various directions. Nutations are due to unequal rate of growth of different sides of the organ. Nutational movement includes all the movements in plants caused by growth in contrast to variation movements or movements produced by reversible turgor changes.