Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Chapter 26, Problem 19CTQ
The Triassic Period was marked by the increase in number and variety of
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How did the evolution of certain reproductive features allow early plants to invade the land? Answer the same question for animals.
Define the following terms related to alterations of generations:
a.Gametophyte
b.Sporophyte
Which two structures evolved though a series of changes in the reproductive biology among some heterosporous plants during the late Devonian period allowed spermatophytes (seed plants) to reduce or eliminate their dependence on water for gamete fertilization and development of the embryo and allowed them to colonize a much wider range of habitats?
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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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Review the life cycles of the three major plant groups (bryophyte or non-vascular plants, seedless vascular plants, and seed plants). Be able to identify the gametophyte and sporophyte generations in each plant group. Make one graph that shows patterns of changes in the following characteristics, as the different plant groups (bryophytes or non-vascular plants, seedless vascular plants, and seed plants) appeared or evolved on land through time. 1) size of the gametophyte generation 2) size of the sporophyte generation 3) biomass (amount of organic material) stored in the sporophyte 4) degree of dependence on water for fertilization Make sure the y- and x- axes of the graph, labels and title are included and correctly applied.arrow_forwardSuppose that plants in the San Francisco Bay area and in southern Chile share a common seed dispersal method. Scientists determine that the evolutionary divergence of these plants happened long before this seed dispersal method arose in each plant. What term relates the seed dispersal method of the San Francisco Bay plant to the seed dispersal method of the southern Chile plant? Explain your answer.arrow_forwardPlants made the leap from water to land during the late Ordovician period (we think). In order to make it, various physical obstacles had to be overcome. Choose one adaptation and explore it further. What evidence do we have of this change? Are there specific fossils of plants that exhibit it? How do we think it may have developed? Not all of these changes occurred at the exact same time. Was your chosen adaptation one of the first or late to the game? including references are appreciated.arrow_forward
- Which of the following statements is NOT true? Answers Bryophytes and ferns have the same type of life cycle Bryophytes were the first land plants In ferns, the dominant generation is the diploid stage organism The adaptation of seeds allowed plants to sexually reproduce on land without the need for water All of the above are true Please explain which one is correct.arrow_forwardRank the following taxonomic groups, from greatest global species diversity (1) to least global species diversity (5). Amphibians Reptiles Fungi Angiosperms Insects Choose ] [Choose ] [Choose ] [Choose ] [Choose ]arrow_forwardRearrange the correct sequence of the life cycle of conifer (first image) Rearrange the correct sequence of the life cycle of ferns (second image)arrow_forward
- Which of the following lists plant terrestrial adaptations from earliest to most recent? vascular, seeds, flowers, and cones nonvascular, vascular, seeds, and flowers nonvascular, seeds, vascular, and flowers vascular, seeds, flowers, and nonvascular vascular, seeds, nonvascular, and flowers 00000arrow_forwardWhich of the following evidences would BEST determine whether two plant species share a recent common ancestor? Group of answer choices seed development fossil record DNA sequences habitat distributionarrow_forwardUse the following diagram to match the following events to the point in the phylogeny Charophyte Liverworts E Moses OA B Hornworts D Lycophytes sway Colonization of terrestrial environments Pines Cycads Monocots Eudicotsarrow_forward
- Many fungi are decomposers and degrade organic matter (such as wood and leaf litter). It has become clear that many of these decomposers are also able to colonize live plants as endophytes (living inside the plant without causing any harm) and allowing for prime access to plant tissues once the plant dies. Explain, using the principles of natural selection, how having the ability to be both a decomposer and endophyte evolved. Make sure you include the four steps of evolution by natural selection in your response.arrow_forwardThe discovery of a new species cannot change the structure of a previously proposed tree, but can only lead to the addition of a new branch. True or falsearrow_forwardDraw a bar graph showing the number of species in each group of plants. Is there a correlation between the age of the plant group and the group’s diversity?arrow_forward
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