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18 Aug 2020, 05:22
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Question Stats:
73% (02:33) correct
27%
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wrong
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The plant called the scarlet gilia can have either red or white flowers. It had long been thought that hummingbirds, which forage by day, pollinate its red flowers and that hawkmoths, which forage at night, pollinate its white flowers. To try to show that this pattern of pollination by colors exists, scientists recently covered some scarlet gilia flowers only at night and others only by day: plants with red flowers covered at night became pollinated; plants with white flowers covered by day became pollinated.
Which of the following, if true, would be additional evidence to suggest that hummingbirds are attracted to the red flowers and hawk moths to the white flowers of the scarlet gilia?
A) Uncovered scarlet gilia flowers, whether red or white, became pollinated at approximately equal rates.
B) Some red flowers of the scarlet gilia that remained uncovered at all times never became pollinated.
C)White flowers of the scarlet gilia that were covered at night became pollinated with greater frequency than white flowers of the scarlet gilia that were left uncovered.
D) Scarlet gilia plants with red flowers covered by day and scarlet gilia plants with white flowers covered at night remained unpollinated.
E) In late August, when most of the hummingbirds had migrated but hawkmoths were still plentiful, red scarlet gilia plants produced fruit more frequently than they had earlier in the season.
Posted from my mobile device
Which of the following, if true, would be additional evidence to suggest that hummingbirds are attracted to the red flowers and hawk moths to the white flowers of the scarlet gilia?
A) Uncovered scarlet gilia flowers, whether red or white, became pollinated at approximately equal rates.
B) Some red flowers of the scarlet gilia that remained uncovered at all times never became pollinated.
C)White flowers of the scarlet gilia that were covered at night became pollinated with greater frequency than white flowers of the scarlet gilia that were left uncovered.
D) Scarlet gilia plants with red flowers covered by day and scarlet gilia plants with white flowers covered at night remained unpollinated.
E) In late August, when most of the hummingbirds had migrated but hawkmoths were still plentiful, red scarlet gilia plants produced fruit more frequently than they had earlier in the season.
Posted from my mobile device
18 Aug 2020, 11:07
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Strengthen
A) Uncovered scarlet gilia flowers, whether red or white, became pollinated at approximately equal rates.
incorrect weaken the argument
B) Some red flowers of the scarlet gilia that remained uncovered at all times never became pollinated.
weakening- Incorrect
C)White flowers of the scarlet gilia that were covered at night became pollinated with greater frequency than white flowers of the scarlet gilia that were left uncovered.
OOS- Incorrect
D) Scarlet gilia plants with red flowers covered by day and scarlet gilia plants with white flowers covered at night remained unpollinated.
Correct- strengthening the conclusion
E) In late August, when most of the hummingbirds had migrated but hawkmoths were still plentiful, red scarlet gilia plants produced fruit more frequently than they had earlier in the season
Irrelevant- incorrect
A) Uncovered scarlet gilia flowers, whether red or white, became pollinated at approximately equal rates.
incorrect weaken the argument
B) Some red flowers of the scarlet gilia that remained uncovered at all times never became pollinated.
weakening- Incorrect
C)White flowers of the scarlet gilia that were covered at night became pollinated with greater frequency than white flowers of the scarlet gilia that were left uncovered.
OOS- Incorrect
D) Scarlet gilia plants with red flowers covered by day and scarlet gilia plants with white flowers covered at night remained unpollinated.
Correct- strengthening the conclusion
E) In late August, when most of the hummingbirds had migrated but hawkmoths were still plentiful, red scarlet gilia plants produced fruit more frequently than they had earlier in the season
Irrelevant- incorrect
04 Jan 2025, 09:50
Kudos
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Hummingbirds pollinate the red flowers during the day, and Hawkmoths pollinate the white flowers at night. The conclusion from stem which we need to support is that hummingbirds are attracted to red flowers, and Hawkmoths are attracted to white flowers. Let's check the options now.
Option A: This weakens since if the rate is equal then we cannot support the preference of the two pollinators.
Option B: This weakens since if uncovered red flowers are not pollinated, then we cannot support the preference of hummingbirds towards the red flowers.
Option C: This means hawkmoths do not consider white as their preferred colour since they are pollinating covered flowers too, which turns out to be white.
Option D: Okay, if they cannot see the colour then they will not pollinate. Makes sense.
Option E: Irrelevant.
Option D is correct.
Option A: This weakens since if the rate is equal then we cannot support the preference of the two pollinators.
Option B: This weakens since if uncovered red flowers are not pollinated, then we cannot support the preference of hummingbirds towards the red flowers.
Option C: This means hawkmoths do not consider white as their preferred colour since they are pollinating covered flowers too, which turns out to be white.
Option D: Okay, if they cannot see the colour then they will not pollinate. Makes sense.
Option E: Irrelevant.
Option D is correct.
suminha
The plant called the scarlet gilia can have either red or white flowers. It had long been thought that hummingbirds, which forage by day, pollinate its red flowers and that hawkmoths, which forage at night, pollinate its white flowers. To try to show that this pattern of pollination by colors exists, scientists recently covered some scarlet gilia flowers only at night and others only by day: plants with red flowers covered at night became pollinated; plants with white flowers covered by day became pollinated.
Which of the following, if true, would be additional evidence to suggest that hummingbirds are attracted to the red flowers and hawk moths to the white flowers of the scarlet gilia?
A) Uncovered scarlet gilia flowers, whether red or white, became pollinated at approximately equal rates.
B) Some red flowers of the scarlet gilia that remained uncovered at all times never became pollinated.
C)White flowers of the scarlet gilia that were covered at night became pollinated with greater frequency than white flowers of the scarlet gilia that were left uncovered.
D) Scarlet gilia plants with red flowers covered by day and scarlet gilia plants with white flowers covered at night remained unpollinated.
E) In late August, when most of the hummingbirds had migrated but hawkmoths were still plentiful, red scarlet gilia plants produced fruit more frequently than they had earlier in the season.
Posted from my mobile device
Which of the following, if true, would be additional evidence to suggest that hummingbirds are attracted to the red flowers and hawk moths to the white flowers of the scarlet gilia?
A) Uncovered scarlet gilia flowers, whether red or white, became pollinated at approximately equal rates.
B) Some red flowers of the scarlet gilia that remained uncovered at all times never became pollinated.
C)White flowers of the scarlet gilia that were covered at night became pollinated with greater frequency than white flowers of the scarlet gilia that were left uncovered.
D) Scarlet gilia plants with red flowers covered by day and scarlet gilia plants with white flowers covered at night remained unpollinated.
E) In late August, when most of the hummingbirds had migrated but hawkmoths were still plentiful, red scarlet gilia plants produced fruit more frequently than they had earlier in the season.
Posted from my mobile device
