Chapter 29.6- Timing of developmental events Flashcards
How is the growth of flowering plants controlled?
It is controlled by day length. Photoperiodism is to describe the effect of the day length on flowering
What are short day plants?
Short day plants are plants that flower only when the day length is less than a critical value they bloom in the spring or fall
What are long day plants?
Long day plants flower only when the light period exceeds a certain length they bloom in the midsummer
What are day-neutral plants?
Day length has no effect on plant
Why do plants have a sensitivity to day length?
it helps to make sure that plants only flower when they have the capacity to house large amounts of seeds nd that there is enough time for the seeds to mature before harsh weather
How does phytochrome hep promote flowering ?
It synchronizes the plants circadian clock to the enviorment
acts as a photoreceptor
tells plants whether its light or dark out
What is vernalization?
is a process where flowering is induced only when it has experienced long cold temperatures
