first tested the 'pollinator-attraction' hypothesis that red flowers attract pollinators:  once drawn to a tree, pollinators could forage on the green flowers still present, increasing overall pollination efficiency.  Please assess the lowercase-Roman-numeral-labelled statements that appear immediately below and click the uppercase-letter-labelled response that appears below and conveys the most accurate  information. i. If the pollinator-attraction hypothesis were correct, then green flowers surrounded by red flowers should receive more pollen than should green flowers surrounded by only green flowers. ii. The prediction in statement i could be tested by removing red flowers from some trees, forming one experimental group, and leaving red flowers on other trees, forming another experimental group, and measuring and comparing pollen deposited by pollinators. iii. If the test described in statement ii were to reveal a significant difference in pollen deposited on green flowers between the two groups, then the null hypothesis 'no difference between groups' would be falsified (in a classical, frequency-based statistical hypothesis testing sense).   Question 6 options:   A)  Statements i and iii convey accurate information.   B)  Statement i conveys accurate information.   C)  Statements ii and iii convey accurate information.   D)  Statements i, ii, and iii convey accurate information.   E)  Statements i and ii convey accurate information.

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In the experiment conducted to test why individuals in the tree species Fuschsia excorticata retain flowers after they turn red even though the trees pollinate and offer a nectar reward only when flowers are green (Figure attached 10.28  first tested the 'pollinator-attraction' hypothesis that red flowers attract pollinators:  once drawn to a tree, pollinators could forage on the green flowers still present, increasing overall pollination efficiency.  Please assess the lowercase-Roman-numeral-labelled statements that appear immediately below and click the uppercase-letter-labelled response that appears below and conveys the most accurate  information.

i. If the pollinator-attraction hypothesis were correct, then green flowers surrounded by red flowers should receive more pollen than should green flowers surrounded by only green flowers.

ii. The prediction in statement i could be tested by removing red flowers from some trees, forming one experimental group, and leaving red flowers on other trees, forming another experimental group, and measuring and comparing pollen deposited by pollinators.

iii. If the test described in statement ii were to reveal a significant difference in pollen deposited on green flowers between the two groups, then the null hypothesis 'no difference between groups' would be falsified (in a classical, frequency-based statistical hypothesis testing sense).

 

Question 6 options:

 

A) 

Statements i and iii convey accurate information.

 

B) 

Statement i conveys accurate information.

 

C) 

Statements ii and iii convey accurate information.

 

D) 

Statements i, ii, and iii convey accurate information.

 

E) 

Statements i and ii convey accurate information.

392 Part 3 Adaptation
Hypanthium
(floral tube)
Sepal
5 mm
5m
Ovary
Abscission
zone
Style
Stigma
(b)
Percentage of flowers
88828898AA
100
80
70
60
30 -
Color of hypanthium and sepals over time
Nectar-
D
01
Green
Intermediate
2 3 4
Red
Abscised
5 6 7 8 9 10 11 12 13 14 15
Days after opening
Because a Kotukutuku flower hangs downward, its ovary is at the top (Figure
10.28a). The body of the bell consists of the hypanthium, or floral tube, and the
sepals. The style resembles an elongated clapper. It is surrounded by shorter sta-
mens and a set of reduced petals.
The hypanthium and sepals are the most conspicuously showy parts of the
flower. They remain green for about 5.5 days after the flower opens, then begin
to turn red (Figure 10.28b). The transition from green to red lasts about 1.5 days,
Figure 10.28 Flower
change in Fuchsia exc
cata(a) A Fuchsia exc
flower. (b) The horizont
shows flower age, in da
opening. The vertical ax
graph lines show the pe
of flowers that are in ea
phase at each age. From
and Lively (1989)
Transcribed Image Text:392 Part 3 Adaptation Hypanthium (floral tube) Sepal 5 mm 5m Ovary Abscission zone Style Stigma (b) Percentage of flowers 88828898AA 100 80 70 60 30 - Color of hypanthium and sepals over time Nectar- D 01 Green Intermediate 2 3 4 Red Abscised 5 6 7 8 9 10 11 12 13 14 15 Days after opening Because a Kotukutuku flower hangs downward, its ovary is at the top (Figure 10.28a). The body of the bell consists of the hypanthium, or floral tube, and the sepals. The style resembles an elongated clapper. It is surrounded by shorter sta- mens and a set of reduced petals. The hypanthium and sepals are the most conspicuously showy parts of the flower. They remain green for about 5.5 days after the flower opens, then begin to turn red (Figure 10.28b). The transition from green to red lasts about 1.5 days, Figure 10.28 Flower change in Fuchsia exc cata(a) A Fuchsia exc flower. (b) The horizont shows flower age, in da opening. The vertical ax graph lines show the pe of flowers that are in ea phase at each age. From and Lively (1989)
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