Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Chapter 25.1, Problem 1TYK
Summary Introduction
Introduction:
Plants belong to kingdom plantae and are multi-cellular and autotrophic eukaryotes. They can make their own food by the process of photosynthesis, as they contain chloroplast, which captures light energy to make glucose. Plants include gymnosperms, flowering plants, conifers, hornworts, mosses, green algae, liverworts, and mosses.
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Which of the following is a universal feature of the life cycles of land plants?
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Do mosses have an alternation of isomorphic or heteromorphic generations? That is, can you easily tell a moss gametophyte from a moss sporophyte? When we look at leafy green moss plants, what are we seeing—the gametophyte or the sporophyte? In a flowering plant species, would the equivalent stage be the plant or the pollen grains and megagametophytes?
Which of the following statements characterize the megaphyll line of evolution? A) They differ from microphylls by developing a single, unbranched vein rather than a branched vascular system.B) They are believed to have evolved from branching telomeres that flattened and developed photosynthetic tissue between the branches.C) They developed into leaves that can also be called lycophyllsD) They developed into the large leaves of the angiosperms
Chapter 25 Solutions
Principles of Biology
Ch. 25.1 - Why do you think liverworks, mosses, and hornworts...Ch. 25.1 - Prob. 1TYKCh. 25.1 - Prob. 2TYKCh. 25.2 - Prob. 1CCCh. 25.2 - Prob. 2CCCh. 25.2 - Prob. 1TYKCh. 25.2 - Prob. 2TYKCh. 25.3 - In what way are gymnosperms different from...Ch. 25.3 - Prob. 2TYKCh. 25.4 - Prob. 1TYK
Ch. 25.4 - Prob. 2TYKCh. 25.5 - In what other way do corn ears differ from thoseof...Ch. 25.5 - What feature of wild food did humans alter during...Ch. 25 - Prob. 1TYCh. 25 - Prob. 2TYCh. 25 - Prob. 3TYCh. 25 - Prob. 4TYCh. 25 - Prob. 5TYCh. 25 - Prob. 6TYCh. 25 - Prob. 7TYCh. 25 - Prob. 8TYCh. 25 - Prob. 9TYCh. 25 - Prob. 10TYCh. 25 - Prob. 1CCQCh. 25 - Prob. 2CCQCh. 25 - Prob. 3CCQCh. 25 - Prob. 1CBQCh. 25 - Prob. 2CBQ
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- Seeds and pollen grains are key adaptations for life on land. These adaptations relate to reproductive success and survival advantages. The following questions require you to explain some of these adaptations. A. Contrast sperm delivery in seedless plants with sperm delivery in seed plants. (5-6 sentence) B. Discuss at least one feature of seed plants that contributed to their success on land in contrast with seedless plants. (2-3 sentences) C. Flowering plants (Magnoliophyta) are the most successful of all plant groups in terms of their species diversity and ubiquity across habitat types. Climate warming is causing shifts in the timing of life history events for many species. Discuss how climate warming may influence reproductive strategies employed by flowering plants. (2-3 sentence)arrow_forwardDo mosses have an alteration of isomorphIC Or heteromorphic generations? That is, can youeasily tell a moss gametophyte from a moss sporophyte? When we look at leafy green mossplants, what are we seeing - gametophyte or the sporophyte? in a fiowering plant species,would the equivalent stage be the plant the pollen grains and megagametophytesarrow_forwardWhich of the following statements is false? Answers: The gametophyte is the dominant form for bryophytes The sporophyte is the dominant form for seedless vascular plants Female angiosperm cones are hard and long-lasting gymnosperm pollen grains are gametophytes that do not form a free-living plant all of the above are true Please explain which one is correct .arrow_forward
- Plants Are Adapted to Life on Land Plants developed from a group of green algae (members of Kingdom Protista) called the charophytes. Like these green algae, plants have a life cycle called the alternation of generations. Draw a diagram of the basic life cycle of a plant, showing the alternation of the sporophyte and gametophyte generations. Unlike green algae that live in water, plants live on land. Being surrounded by air means that they risk losing too much water through evaporation and dying from dehydration. Name 3 characteristics of plants that help them conserve water and protect them from drying.arrow_forwardFrom the seed plant phylogeny, which of the following is true of the Gnetophyta? a) They are a paraphyletic group b) They are monophyletic with Pinophyta c) They are the sister group to Ginkgophyta d) They could have evolved before or after Cupressophyta split from Pinophyta e) Their seeds are contained in ovariesarrow_forwardWhich of the following structures is not found in bryophytes? a. a cellulose cell wall b. chloroplast c. sporangium d. rootarrow_forward
- What are leaves? what are the two types? What is the difference between homosporous plants and heterosporous plants? What are megaspores and microspores? What was significance of the ecological role of seedless vascular plants back when they dominated terrestrial habitats? Why is that so important to our modern world today?arrow_forwardWhat is the ploidy of the following structures: gametophyte, seed, spore, sporophyte? a. 1n, 1n, 2n, 2n b. 1n, 2n, 1n, 2n c. 2n, 1n, 2n, 1n d. 2n, 2n, 1n, 1narrow_forwardCompare and contrast the three bryophyte groups in terms of distinguishing morphoanatomical features, reproduction, diversity and habitat. Bryophyte Group Criteria Hornworts Liverworts Mosses Gametophyte Morphology Dioicous/Monoicous* Asexual Reproduction Presence of conducting cells Photosynthetic Parts Presence of Stomata Presence of Cuticle Sporophyte Morphology/Appearance Other Distinct Features/Structures Habitat/Distribution No. of Species Worldwide Summary of Key Similarities Summary of Key Differencesarrow_forward
- Bullet items are selections for the question above it 1.The seedless vascular plants not only include well-known plants such as ferns but also groups of plants called horsetails and club mosses. These plants originally arose after the bryophytes. Which of the following statements describes why seedless vascular plants are better adapted to dry land than the bryophytes? Seedless vascular plants have spores that can distribute on the wind. Seedless vascular plants have larger leaves, or fronds, that are more effective in absorbing nutrients from the environment. Seedless vascular plants have vascular tissue and roots to effectively absorb and distribute water and nutrients throughout the plant. 2. However, seedless vascular plants are still heavily dependent on water for reasons other than keeping hydrated. Which of the following statements correctly explains how seedless vascular plants are still dependent on water? Seedless vascular plants require water…arrow_forwardTrimerophytes were plants that probably evolved from rhyniophytes but with more derived features. In one feature, certain stems grow longer than others, and thus, rather than having dichotomous branching, they have branching (displayed especially by Pertica). Simultaneously, the positioning of branches became more and .arrow_forwardMonilophytes and seed plants both have megaphylls, as well as other traits not found in lycophytes. Explain this observation using the Figure in the picture and the concept of descent with modification.arrow_forward
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