Define a) short day and b) long day plant using the critical daylength concept.
a) A short day plant is a plant that requires a longer period of darkness (i.e., a shorter period of light) in order for it to flower or initiate certain physiological processes. The critical daylength for a short day plant is typically less than 12-14 hours of daylight.
b) A long day plant is a plant that requires a shorter period of darkness (i.e., a longer period of light) in order for it to flower or initiate certain physiological processes. The critical daylength for a long day plant is typically more than 12-14 hours of daylight.
a) A short day plant, also known as a long-night plant, is a plant that requires a critical period of darkness longer than its critical daylength in order to initiate flowering or other photoperiodic responses. In other words, short day plants require nights longer than a specific duration to complete their life cycle and flower.
b) A long day plant, also known as a short-night plant, is a plant that requires a critical period of darkness shorter than its critical daylength in order to initiate flowering or other photoperiodic responses. In this case, long day plants require nights shorter than a specific duration to complete their life cycle and flower.
The critical daylength is the duration of uninterrupted darkness a plant requires to initiate specific developmental changes. It varies for different plant species and can be influenced by various environmental factors such as latitude, season, and artificial light exposure.