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A long day plant requires fewer than a certain number of hours of darkness in each 24 hour period to induce flowering. These plants typically flower in the late spring or early summer as days are getting longer.


Short day plants flower when the night is longer than a critical length. They cannot flower under the long days of summer. These plants generally flower in late summer or fall, as days are getting shorter. Short day plants will not flower if a pulse of artificial light is shined on the plant for several minutes during the middle of the night; they require a consolidated period of darkness before floral development can begin. Natural nighttime light, such as moonlight or lightning, is not of sufficient brightness or duration to interrupt flowering.
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15y ago
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14y ago

Short- need a lot of night

long- need a lot of day.

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Q: What are the differences between short day plants and long day plants?
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1 How long are the short distance and long distance transport in plants?

The short-distance substance transport in plants are from cell to cell only. The long-distance transport is the photosynthate movement from the leaves to the roots.


What is the factors that initiates flowering in a long day plants?

Nights shorter than a critical length. Long day plants can also be thought of as short night plants.


Are dandelions short day long day or day-neutral plants?

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What factor primarily determines the time of year that a plant flowers?

Photoperiod determines the time of flowering in many plants. Accordingly the plants have been classified as short day plants, long day plants and day neutral plants. A short day plant can be brought into flowering by putting in the dark for a specific period of time for the required days. Similarly, long day plants can be subjected to artificial light of desired intensity to initiate flowering.Photoperiod determines the time of flowering in many plants. Accordingly the plants have been classified as short day plants, long day plants and day neutral plants. A short day plant can be brought into flowering by putting in the dark for a specific period of time for the required days. Similarly, long day plants can be subjected to artificial light of desired intensity to initiate flowering.