BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
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Chapter 27, Problem 4CT
Summary Introduction
To determine:
The reason for higher concern for the hormones injected into the animals for increasing yield of animal products than on the plant's hormones that increase the yield of plant products.
Introduction:
The phytohormones are the chemical compounds released by the plants that influence various physiological processes in the plant like growth, development, senescence, abscission, cell division and so on.
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Cattle in industrial dairy farms are typically given rBST, an animal hormone that increases a cow’s milk production. There is concern that such hormones may have unforeseen effects on milik-drinking humans. Why is there much less concern about plant hormones in the plant foods we eat?
You have been chosen as the lead student gardener for the CSUMB Future Farmers of America Club (FFAC). Your club is looking to
you and your Bio211 plant experience to guide them. You arrive at the new FFAC garden plots and notice that while there are many
fruits on the apple tree, they seem to remain hard, sour, and green. Your club mates need the red, sweet apples in just a few days
for the apple competition.
Choose the best hormone to apply and the reason supporting its use:
Select one:
O a. Apply ethylene to the apples to increase ripening.
O b. Apply ethylene to slow ripening and increase chlorophyll levels.
O C. Apply auxin to increase parthenocarpy
O d. Apply gibberellins to increase fruit size.
O e. Apply auxins to decrease apical dominance and increase water intake.
Plant Hormones
Chapter 27 Solutions
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Ch. 27 - An animal pollinator may be rewarded by _______...Ch. 27 - The arrival of pollen grains on a receptive stigma...Ch. 27 - Prob. 3SACh. 27 - In flowers, the structures that produce male...Ch. 27 - Seeds are mature _______ ; fruits are...Ch. 27 - Prob. 6SACh. 27 - The three main parts of a typical mature eudicot...Ch. 27 - Prob. 8SACh. 27 - Prob. 9SACh. 27 - Prob. 10SA
Ch. 27 - Prob. 11SACh. 27 - Prob. 12SACh. 27 - Prob. 13SACh. 27 - Which of the following statements is false? a....Ch. 27 - Match the observation with the main hormones.. ___...Ch. 27 - The oat coleoptiles on the left have been...Ch. 27 - Is the seedling shown on the right a monocot or...Ch. 27 - Prob. 3CTCh. 27 - Prob. 4CT
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- 2,4-D and 2,4,5-T are examples of hormonal-based herbicides. Name the phytohormone behind this herbicides and how it works in suppressing weeds.arrow_forwardIt was observed during the early 20th century that the abscission zone of leaves of tree growing close to gas burning street lamps weakened (entered the abscission phase) earlier than trees located further away from the lamps. Experiments showed that weakening of the abscission zone was not caused by either the lamp's light or heat. Instead the research on this phenomenon led to the discovery of a new gaseous plant hormone. What is this hormone? Ethylene Abscisic acid (ABA) Gibberellins Auxin Strigolactone Cytokininarrow_forwardThe summer is not optimal for grape growing and you're searching in your memory for something regarding plant hormones. Explain 2 ways you could utilize plant hormones (choose from auxin, ethylene, cytokinin, gibberellin, abscisic acid, salicylic acid, jasonic acid) to compensate for a problem during growing. For each way:arrow_forward
- A nine-year research and experimentations have successfully developed rice plants with golden hue kernels instead of the usual white kernels. What is the advantage of this modified rice plant? Select one: To make the plant become resistant to herbivores. To provide sufficient rice produce due to its shorter cycle. To add nutritional value to the rice kernels. To allow easy harvesting and processing.arrow_forwardVolatile Secondary Metabolites in Plant Stress Responses In 2007, researchers Casey Delphia, Mark Mescher, and Consuelo De Moraes (pictured at left) published a study on the production of different volatile chemicals by tobacco plants in response to predation by two types of insects: western flower thrips and tobacco budworms. Their results are shown in FIGURE 30.20. Volatile Compound Produced Treatment C T W WT HV HVT Myrcene 0 0 0 0 17 22 -Ocimene 0 433 15 121 4.299 5.315 Linatod 0 0 0 0 125 178 indole 0 0 0 0 74 142 Nicotine 0 0 233 160 390 538 -Etemene 0 0 0 0 90 102 -Caryophyllene 0 100 40 124 3.704 6.166 -Humutene 0 0 0 0 123 209 Sesquiterpene 0 7 0 0 219 268 -Farnesene 0 15 0 0 293 457 Caryophyltene oxide 0 0 0 0 89 166 Total 0 555 288 406 9.423 13.563 FIGURE 30.20 Volatile (airborne) compounds produced by tobacco plants (Nicotiana tabacum) in response to predation by Different inserts. Plants were untreated (C), attacked by thrips (T), mechanically wounded (W). mechanically wounded and attacked by thrips (WT), attacked by budworms (HVJ, or attacked by budworms and thrips (HVTJ. Values are nanograms/day. 3. Which one of the chemicals tested is most likely produced by tobacco plants in a nonspecific response to predation?arrow_forwardVolatile Secondary Metabolites in Plant Stress Responses In 2007, researchers Casey Delphia, Mark Mescher, and Consuelo De Moraes (pictured at left) published a study on the production of different volatile chemicals by tobacco plants in response to predation by two types of insects: western flower thrips and tobacco budworms. Their results are shown in FIGURE 30.20. Volatile Compound Produced Treatment C T W WT HV HVT Myrcene 0 0 0 0 17 22 -Ocimene 0 433 15 121 4.299 5.315 Linatod 0 0 0 0 125 178 indole 0 0 0 0 74 142 Nicotine 0 0 233 160 390 538 -Etemene 0 0 0 0 90 102 -Caryophyllene 0 100 40 124 3.704 6.166 -Humutene 0 0 0 0 123 209 Sesquiterpene 0 7 0 0 219 268 -Farnesene 0 15 0 0 293 457 Caryophyltene oxide 0 0 0 0 89 166 Total 0 555 288 406 9.423 13.563 FIGURE 30.20 Volatile (airborne) compounds produced by tobacco plants (Nicotiana tabacum) in response to predation by Different inserts. Plants were untreated (C), attacked by thrips (T), mechanically wounded (W). mechanically wounded and attacked by thrips (WT), attacked by budworms (HVJ, or attacked by budworms and thrips (HVTJ. Values are nanograms/day. 4. Are any chemicals produced in response to predation by budworms, but not in response to predation by thrips?arrow_forward
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