Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Chapter 26, Problem 25CTQ
Biosynthesis of nectar and nutrient-rich pollen is energetically very expensive for a plant. Yet, plants funnel large amounts of energy into animal pollination. What are the evolutionary advantages that offset the cost of attracting animal pollinators?
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Biosynthesis of nectar and nutrient-rich pollen is energetically very expensive for a plant. Yet, plants funnel large amounts of energy into animal pollination. What are the evolutionary advantages that offset the cost of attracting animal pollinators?
If animal pollination has so many advantages,why did approximately 20% of angiosperm species subsequently evolve a dependence on wind for pollination?
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…
Chapter 26 Solutions
Biology 2e
Ch. 26 - Figure 26.8 At what stage dees the diploid zygote...Ch. 26 - Figure 26.15 If a flower lacked a megasporangium,...Ch. 26 - Seed plants are. all homosporous mostly...Ch. 26 - Besides the seed, what ether major structure...Ch. 26 - In which of the following geological periods would...Ch. 26 - Which of the following structures widens the...Ch. 26 - Which of the following traits characterizes gym...Ch. 26 - Megasporocytes will eventually produce which of...Ch. 26 - What is the ploidy of the following structures...Ch. 26 - In the northern forests of Siberia, a tall tree is...
Ch. 26 - Which of the following structures in a flower is...Ch. 26 - Pollen grains develop in which structure? the...Ch. 26 - In the course of double fertilization, one sperm...Ch. 26 - Corn develops from a seedling with a single...Ch. 26 - Which of the following plant structures is not a...Ch. 26 - White and sweet-smelling flowers with abundant...Ch. 26 - Abundant and powdery pollen produced by small,...Ch. 26 - Plants are a source of food fuel medicine all of...Ch. 26 - The Triassic Period was marked by the increase in...Ch. 26 - What role did the adaptations of seed and pollen...Ch. 26 - The Mediterranean landscape along the sea shore is...Ch. 26 - What are the four modern-day phyla of gymnosperms?Ch. 26 - Some cycads are considered endangered species and...Ch. 26 - What are the two structures that allow angiosperms...Ch. 26 - Biosynthesis of nectar and nutrient-rich pollen is...Ch. 26 - What is biodiversity and why is it important to an...
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- Most wind-pollinated flowering plants have inconspicuous, non-fragrant flowers. How might nature be affected if all flowers were that way?arrow_forwardMost wind pollinated flowering plants have incospicuous non-fragrant flowers. How might nature be affected if all flowers were that way?arrow_forwardPollination is a key aspect of plant reproduction. Compare and contrast wind pollination and animal pollination, and explain one specific benefit that animal pollination offers over wind pollination.”arrow_forward
- The drooping, bell-like flower Aquilegia canadensis is adapted for cross-pollination. However, if the plant has not been pollinated previously, self-pollination can occur. However, if cross pollination occurs after self-pollination takes place, the pollen from cross pollination reaches the style before the pollen from self-pollination. Using course concepts and vocabulary 1) Provide a reasoning for this phenomenon. 2) Would this adaptation for reproduction be beneficial for the plant?arrow_forwardPlants reproduce through various methods. Explain which method helps to create genetic variability in crop plants? Moreover elaborate mechanisms promoting self or cross pollination.arrow_forwardEVOLUTION CONNECTION In general, light-sensitivegermination is more pronounced in small seeds compared withgermination of large seeds. Suggest a reason whyarrow_forward
- What are the advantages and disadvantages of wind pollination? What are the advantages and disadvantages of pollination by animals? Why do both types of pollination persist among the angiosperms?arrow_forwardRecently, the moss Physcomitrella patens had been included among the model organisms in understanding the physiology, molecular biology, and other factors to represent the plant kingdom. What advantages do this species bring in these given aspects over the very well-known Arabidopsis thaliana?arrow_forwardSexual reproduction in plants is considered to be a source of variation creation. How reproduction mechanisms played their role in creating variation and also give view regarding the mechanism that could be responsible for causing a different type of pollinationarrow_forward
- How does pollination by insects solve many of the problems associated with wind pollination?arrow_forwardDo plants produce eggs and sperm through mitosis or through meiosis?Briefly explain your reasonin Why are plant life cycles often described as showing ‘Alternation of generations’?arrow_forward(a) Please describe the peripheral zone (PZ) genetic program maintains indeterminacy and allows the initiation of lateral primordia in shoot apical meristems. (b) Explain how this genetic program has been used in compound leavesarrow_forward
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