Question

Opening of floral buds into flowers, is a type of

• A. autonomic movement of variation
• B. paratonic movement of growth
• C. autonomic movement of growth
• D. autonomic movement of locomotion.

Answer 1

Answer: (C)

autonomic movement of growth

Answer 2

Movement may be of two types, movement of locomotion and movement of curvature. Movement of curvature is movement of individual parts in relation to other parts. Curvature movement may be growth movements and turgor movements. Growth movements are caused by differential growth in different part of an organ. Opening of floral buds into flowers is such a type of growth movement. Mostly floral bud opening shows thermonastic movement i.e. opening and closing are controlled by temperature. Sometimes movements are controlled by presence or absence of light, eg. Oxalis.