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- 1. A short-day plant flowers only when exposed to light for less than 12 hours long. Which of the following would cause the plant to flower a 12-hour day and 12-hour night with a flash of red light b. an 8-hour day and 16-hour night with a flash of white light after 8 hours c. 9-hour night and 15-hour day with 1 minute of darkness after 7 hours d. 13-hour night and 11-hour day with 1 minute of darkness after 6 hours e. 24 hours of continuous lightLight is often the most important environmental factor for inducing a plant to flower, but it is not the intensity of light. What it the important aspect?A long day plant is given a long night, and is interrupted by a light pulse in the middle of the night. Which quality of the light pulse will most likely prevent flowering? Select one: a. UV light b. green light c. red light d. far-red light
- If a long-day plant has a critical night length of 9 hours, which 24-hour cycle would prevent flowering? (A) 16 hours light/8 hours dark (B) 14 hours light/10 hours dark (C) 4 hours light/8 hours dark/4 hours light/8 hours dark (D) 8 hours light/8 hours dark/light flash/8 hours darkPlant development is influenced by: A. quality of light only B. quality and quantity of light C. quality and duration of light D. quality, quantity and duration of lightWe know that short-day plants do not really need short days, but actually long nights. Describe the type of treatment that proves this. Is some kind of light given during the night or some period of darkness given during the day?
- What is the phenomenon wherein the plant grows toward the unidirectional light? Photoperiodism Phototropism Thigmonasty PhotonastyWill a long-day plant (LDP) bear flowers after it was subjected to nights interrupted by flashing red light followed by far-red light? *Plants growing beneath the canopy of an Amazonian forest receive more ____, which ____ stem elongation Select one: a. far red light, prevents b. blue light, prevents c. far red light, promotes d. red light, prevents e. red light, promotes
- Will a long-day plant (LDP) bear flowers after it was subjected to nights interrupted by flashing red light?Predict whether flowering in a short day plant with a minimum critical length of 14 hours would be expected to occur in the following situations. The plant is exposed to 15 hours of daylight and 9 hours of darkness uninterrupted. The plant is exposed to 9 hours of daylight and 15 hours of darkness. The plant is exposed to 9 hours of daylight and 15 hours of darkness, with 10 minutes exposure to red light in the middle of the night.If a plant flowers in a controlled chamber with a daily cycle of 10 hours of light and 14 hours of darkness, is it a short-day plant? Explain.