Stomatal movement is not affected by

Options

A. `O_(2)` concentration
B. Light
C. Temperature
D. `CO_(2)` concentration

Explanation

Stomatal movement is not affected by `O_(2)` concentration . Stomata are tiny pores complexes found in the epidermis of leaves and other soft aerial parts . They are meant for the gaseous exchange but are also the main source of transpiration. Stomatal movements are affected by many factors like light , temperature and `CO_(2)` concentration . In the majority of plants , the stomata are open in light and close in darkness . Normally high temperature above `30^(@)C` reduces stomatal opening in many species . Low `CO_(2)` concentration usually induces opening of stomata while high `CO_(2)` concentration closes the same .