EVOLUTION CONNECTION With respect to sexual reproduction,some plant species are fully self-fertile, others are fully selfincompatible, and some exhibit a “mixed strategy” withpartial self-incompatibility. These reproductive strategiesdiffer in their implications for evolutionary potential. How,for example, might a self-incompatible species fare as asmall founder population or remnant population in a severepopulation bottleneck (see Concept 23.3), as compared with aself-fertile species?

EVOLUTION CONNECTION With respect to sexual reproduction,some plant species are fully self-fertile, others are fully selfincompatible, and some exhibit a “mixed strategy” withpartial self-incompatibility. These reproductive strategiesdiffer in their implications for evolutionary potential. How,for example, might a self-incompatible species fare as asmall founder population or remnant population in a severepopulation bottleneck (see Concept 23.3), as compared with aself-fertile species?

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter35: Stem Structure And Transport

Section: Chapter Questions

Problem 15TYU: EVOLUTION LINK Like stems in general, some vines are herbaceous and others are woody. Tropical rain...

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Course: Botany In stable populations, ones that are neither increasing nor decreasing in abundance (e.g., there are a million trees now and there will be a million trees a thousand years from now), about how many of a plant’s seeds survive and grow to adulthood, being able to replace it when it dies? If during the plant’s lifetime it produces 100,000 seeds, how many do not survive, do not grow, and cannot replace it when it dies. (Hint: Do not think of humans, as we are an increasing population, not a stable one. Almost all our children survive, but that is not true of any other species.) Answer and explain briefly.
Sexual 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 pollination
Describe the challenges for plants in terms of resource circulation or dispersal of reproductive structures from an evolutionary perspective (as they moved from single celled to colonial, to small and then large terrestrial forms. Describe the progression of structures from early evolutionary groups to later evolutionary groups to solve one of these challenges in 2-4 paragraphs
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?
In wild columbine, flower morphology encourages crosspollination. However, during the middle of the receptive period of the stigma, self-pollination can occur if the flower was not previously pollinated. If cross-pollination occurs after selfpollination, then that pollen reaches the base of the style before the self-pollen. Discuss the adaptive significance of this reproduction strategy.
Many plants can be produced as genetically identical clones by asexual reproduction. Although advantageous in some ways, such genetically plants can be a disadvantage when ________. -a disease is present in the environment -the environment is stable -mates are in short supply -pollinators are absent
Roscroot (Sedum integrifohum) is an herbaccous plant species that is found on limestone cliffs in southeastern Minnesota and westem New York. and on rocks slopes at high elevations (3,000 m. or - 10.000 At) in Colorado. In Minnesota and New York. the plants are sprawling and have -drooping leaves, whereas in Colorado the plants are erect and hold their caves upright. a. Briefly describe a study that vou could do in order to determine if the differences in plant morphology observed in these populations of roscroot are genetically based or due to environmental factors and describe the results that would allow vou to conclude that it is heritable. (Do not provide a detailed expenmental design.)
Self-fertilization, or selfing, seems to have obvious disadvantages as a reproductive “strategy” in nature, and ithas even been called an “evolutionary dead end.” So it issurprising that about 20% of angiosperm species primarily rely on selfing. Suggest a reason why selfing might beadvantageous and yet still be an evolutionary dead end.
EVOLUTION LINK Like stems in general, some vines are herbaceous and others are woody. Tropical rain forests have a greater diversity of vines than in any other environment on Earth, and most of these vines are woody. Develop a hypothesis to explain why natural selection has favored the evolution of more species of woody vines (as opposed to herbaceous vines) in tropical rain forests.
QUESTION 10 Which is true regarding plant reproduction? Self-pollination produces offspring genetically identical to the parent modified organs, such as corms and bulbs, are produced as a result of sexual reproduction cross-pollination allows plant populations to survive in unstable environments plants do not reproduce asexually vectors such as flies carry plant spores to new locations
The enormous flower stalks of an Agave plant represent which of the following? Agaves are semelparous. Group of answer choices -high investment in organismal growth -A very high investment in reproduction and none in maintenance of the organism -High investment in both reproduction and maintenance of the organism -low investment in reproduction and high investment in maintenance of the organism
And some plants as stigma becomes receptive to Polin able to facilitate a pollen tube at a different time from when the anthers ripen. How would this affect the plant reproductive strategy why would this increase diversity in the plants offspring?