Question

What do you understand by the sleep movement of plant organs?

Answer 1

Nyctinasty is the way of sleeping for higher animals

Answer 2

Hyponasty - the upward bending of an organ (reverse of epinasty). ... Nyctinasty - the sleep movement (opening and closing) of plant organs, such as leaves and flowers, due to day and night periods of daily rhythm. The leaves of many nyctinastic plants open during the day or part of the day and close at night.