Concept explainers
To analyze:
The preference of hummingbirds and bees among red and light pink flowers and the significant difference in their visitation rates. The reason for the preference of red flowers by hummingbirds.
Given:
The variation at a single locus called the yup caused color differences in the two species, which was found by the researchers. The gene of M. cardinalis allele C is recessive, whereas the allele L of the M. lewisii is dominant.
The genotypes CC were found to be red and the genotypes LC and LL were found to be light pink. The preference of the bees and hummingbirds were recorded. The graphs below show the visitation rates of the bees and hummingbirds.
Introduction:
Flower shows a variety of morphology having different color, structure, and texture. The morphology of flowers is decided by their genetic trait. Pollination plays an important role in the life cycle of the plant. It helps in fertilization of flowers. Pollination is carried out with the help of different insects, birds, and animals.
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Chapter 28 Solutions
Life: The Science of Biology
- The following graph depicts the relationship between the mean flower depth of Zaluzianskya microsiphon plants and the proboscis length of its long-tonged fly Disa nivea pollinator in a specific region. Zaluzianskya microsiphon O Disa nivea 60- 50 40- 30 20- 10 10 20 30 40 50 Mean fly proboscis length (mm) Based on this correlation, do you think these two species are coevolving? Why or why not? And based on the geographic mosaic theory, would you consider the region were the plants and flies live a cold or a hot spot? Explain your answer. Mean flower depth (mm)arrow_forwardUnder which of the following conditions would pollen from an S2S5 plant successfully pollinate an S1S5 flower? a. Using pollen from a carpelate flower to fertilize a staminate flower would be successful. b. If the plants used gametophytic self-incompatibility, half of the pollen would be successful. c. If the plants used sporophytic self-incompatibility, half of the pollen would be successful. d. Pollen from an S2S5 plant can never pollinate an S1S5 flower.arrow_forwardWhat is the difference between self-pollination and cross-pollination? If pollen is transferred from the stamens of a flower to the stigma of the very same flower, is that cross-pollination or self-pollination? If it is transferredfrom the stamen of one flower to the stigma of another flower on the very same plant? If it is transferred from the stamen of one flower to the stigma of another flower on a different plant, but a plant that is a clone of the first one? Animals do not have pollen, of course, but why is it that most animals never have to worry about the equivalent problem of self-fertilization? Why cannot most animals fertilize themselves?arrow_forward
- Which statement about wind-pollinated plants is correct? Their stamens and stigmas are inside the flower and, compared to insect-pollinated plants, they have large petals Their stamens and stigmas are outside the flower and, compared to insect-pollinated plants, they have small petals Their stamens and stigmas are outside the flower and, compared to insect-pollinated plants, they have large petalsarrow_forwardPlease answer the following questions for me: 1 Why is it important to determine whether or not genes that provides insecticide and fungi resistance may be transferred to wild sunflowers? 2. What factors would you measure (response, or dependent varibles)? 3. Fitness can be measured as a seed set (seed production) Why is it important to measure as seed production? 4. Cultivated sunflowers have one stem that produces one single large flower head, while wild flowers have many branches that produce many flowers. Why is it important to measure branching pattern (number of branches produced by F1 plants, backcrosses and wild type sunflowers? 5. Why is it important to include blackcrosses in the exeriment?arrow_forwardConifers have pollination and fertilization are separated by as much as a year’s time in these popular Christmas plants. true or falsearrow_forward
- please help me with the following question asap please its important!! State your null hypothesis for the flower experiment, giving the probability of a left-handed flower # and probability of a right-handed flower (assuming right-handed is dominant) and what is the alternative hypothesis? Null hypothesis : Alternative hypothesis:arrow_forwardWhat do you understand by self-pollination & cross pollination? Give examples of each.arrow_forwardFlowers and Trees Select an Exercise: 2 0 0 0 0 1000 800 600 400 200 Controls GO SM2 Peak G STEP STOP Peak 1 D RESET B D -Petal Tips Year Peak 7 808 Pelal Color C Anthers Sligmas Spur Color Growing Tree lools R -Spur length 1111 In the picture, what phenotypes differ among flowers on Peaks 3 and 4? Petal tips. Blade color and stripes. There are no different phenotypes. Blade color only. Stripes only. Peak 2 E lab notebook Peak 5 Close find bar COM Peak 3 A MM Peak 4 Blade Color Stripesarrow_forward
- What are chasmogamous flowers? Can cross-pollination occur in cleistogamous flowers? Give reasons for your answerarrow_forwardHeterozyus for flower position and stemlength AaTt are allowed to self pollinate. 400 of the resulting seeds are planted. Draw a punnett square for this How many offsprin would be predicted to have terminal flowers and be dwarfarrow_forwardPin and thrum flowers are designed to: O a. Prevent the flowen being fertilised by its own pollen. O b. Increase the amount of pollen that the flower collects. C. Allow the flower to last for a longer period of time. d. Restrict pollinators to just one type of insect. Oe. Make the flovwer more attractive to a pollinator. O O O OOarrow_forward
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