ANIMAL BEHAVIOR
INTRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The orientation of a plant or other organism in response to light, either toward the source of light or away from it
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The period of daylight, specific in length for any given species, that appears to initiate flowering in long-day plants or inhibit flowering in short-day plants
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The interaction of two or more persons or organizations directed toward a common goal which is mutually beneficial
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A plant that flowers only after being exposed to light periods shorter than a certain critical length, as in early spring or fall
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Detailed explanation-1: -photoperiod (daylength)The length of day (light period) in the daily cycle. photoperiodic cycleThe cycling of day and night (light and darkness) . photoperiodic floweringThe flowering which occurs in response to the photoperiodic cycle.
Detailed explanation-2: -Short Day Plants (SDP) They need less than the critical duration of light (about 8-10 hours) and a continuous dark period (about 14-16 hours) to flower. The dark period is very critical for SDP plants and has to be continuous. These plants will not flower if the dark period is briefly interrupted by light.
Detailed explanation-3: -Long‐day plants are summer flowering and have a critical period of longer than 9 to 16 hours.
Detailed explanation-4: -Short-day plants form flowers only when day length is less than about 12 hours. Many spring-and fall-flowering plants are short-day plants, including chrysanthemums, poinsettias and Christmas cactus.