BIOMOLECULES AND ENZYMES

Detailed explanation-1: -These are termed “long-day” plants. These bloom only when they receive more than 12 hours of light. Many of our summer-blooming flowers and garden vegetables are long-day plants, such as asters, coneflowers, California poppies, lettuce, spinach and potatoes.

Detailed explanation-2: -The “short day” (long night) plant is considered a plant that needs a long period of darkness. Short-day plants only grow flowers when the length of the day is less than around 12 hours. Short-day trees, including chrysanthemums, poinsettias and Christmas cactus, are many spring and fall flowering plants.

Detailed explanation-3: -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.

Detailed explanation-4: -Other experiments have proven this by exposing plants to extra red-light in the middle of the night. A short-day plant will not flower if light is turned on for a few minutes in the middle of the night and a long-day plant can flower if exposed to more red-light in the middle of the night.