Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Chapter 29, Problem 6TY
Photoreceptor molecules allow plant cells to detect light of particular wavelengths. To which wavelengths of light is phytochrome responsive?
- violet and ultraviolet
- blue and green
- red and far-red
- all of the above
- none of the above
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A short-day plant flowers only when exposed to light for less than 12 hours
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Chapter 29 Solutions
Principles of Biology
Ch. 29.1 - Prob. 1BCCh. 29.1 - Prob. 1TYKCh. 29.2 - Prob. 1CCCh. 29.2 - Prob. 2CCCh. 29.2 - Prob. 1TYKCh. 29.2 - Prob. 2TYKCh. 29.3 - What kind of light does the active conformation of...Ch. 29.3 - Prob. 2CCCh. 29.3 - Imagine a garden that has been planted with...Ch. 29.3 - Prob. 3CC
Ch. 29.4 - Prob. 1CCCh. 29.4 - Prob. 1TYKCh. 29.5 - Prob. 1CCCh. 29.5 - In what way is systemic acquired resistance to...Ch. 29.5 - Prob. 1TYKCh. 29 - Prob. 1TYCh. 29 - Prob. 2TYCh. 29 - Prob. 3TYCh. 29 - Prob. 4TYCh. 29 - Prob. 5TYCh. 29 - Photoreceptor molecules allow plant cells to...Ch. 29 - Prob. 7TYCh. 29 - Prob. 8TYCh. 29 - Prob. 1CCQCh. 29 - Prob. 2CCQCh. 29 - Prob. 3CCQCh. 29 - Prob. 1CBQCh. 29 - How could you increase the resistance of a...
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- Which phytochrome is sensing the shading and what are the TWO (2) rapid shade avoiding responses? *arrow_forwardWhat are the TWO (2) light regions detected by phytochromes and identify photoreceptor responsible for phototropism response in plants? *arrow_forwardPlease help this is hw and I want to know why I'm wrong Why do many plants use pathways that detect light to regulate their flowering? Selected Answer: This allows plants to link flowering to temperature, which corresponds to the season when conditions are optimal Answers: This allows plants to link flowering to day length, which corresponds to the season when conditions are optimal Flower petals carry out high levels of photosynthesis and require high light conditions This allows plants to link flowering to temperature, which corresponds to the season when conditions are optimal A minimum amount of light is always necessary for floweringarrow_forward
- We 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?arrow_forwardPhytochrome, plays an important role in flowering in many plants. It can also be used to determine when lettuce seeds germinate (shown in the figure below What is phytochrome likely doing in the lettuce seeds? Activating abscisic acid production Activating inhibitors of germination Inhibiting gibberellin synthesis Turning on germination-related genesarrow_forwardThe winding of grape vine tendrils around a trellis support is an example of Negative phototropism Positive thigmotropism thigmonasty Negative gravitropism A circadian rhythmarrow_forward
- What is the gravity receptor involved in gravitropism?arrow_forwardBlue light is more effective than other colors of light in causing the phototropic response. Cryptochrome is the photoreceptor for this response. True Falsearrow_forwardPhotoperiodism, when a plant responds to: A. In order to flower, long day plants need: B. In order to flower, short day planys need:arrow_forward
- What is the phenomenon wherein the plant grows toward the unidirectional light? Photoperiodism Phototropism Thigmonasty Photonastyarrow_forward10°C water 25 °C water 40 °C water Lumes number of bubbles released number of bubbles released number of bubbles released 0 3 7 3 1000 11 23 11 2000 17 35 17 3000 19 39 19 Why are bubbles counted in this experiment, and what do they represent? make a line graph showing the difference in the number of oxygen gas bubbles released by the plant under different light intensities and water temperatures. Which light intensity and water temperature caused the plant to produce the most amount oxygen gas during the process of photosynthesis? Why Which light intensity and water temperature caused the plant to produce the least amount oxygen gas during the process of photosynthesis? Why?arrow_forwardA long-day plant will flower if Select one: O the duration of continuous light is less than a critical length. O the duration of continuous light exceeds a critical length. O the duration of continuous darkness is less than a critical length O it is kept in continuous far-red light. O the duration of continuous darkness exceeds a critical length.arrow_forward
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