Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Chapter 30, Problem 30.2CR
Although there are fewer Ihan 1,000 spedes of gymnosperms. the group is still very successful in terms of its evolutionary longevity, adaptations, and geographic dstribution. Explain.
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http://botit.botany.wisc.edu/botany_130/diversity/plants/mosses.html
Make a complete moss life cycle with the following phases and structures. Note: download the images of Mnium from this link and arrange them in the exact sequence to make the lifecycle. Lifecycle structures with cell division: Meiosis, fertilization within archegonium, capsule (sporangium), spores (n), protonema (n) (Image), male gametophyte (n) (Image), female gametophyte (n) (Image), antheridia (Image), archegonia (Image), sperm, egg, water, zygote (2n), embryo, young growing sporophyte (2n), mature sporophyte (2n) (Image), rhizoids. You can insert the non-image part, using the textbox and fill out the suitable s text. For symbol, click on the shape option and inter in your lifecycle diagram at the required place
Linnean- or rank based classification systems have placed the cycads, ginkgo, conifers and gnetophytes, respectively, into separate categories, of equal ranking (i.e., each gymnosperm group a Phylum or Division). Is the Linnaean classification of each gymnosperm group justifiable, based on the information shown in the figures?
There are two alternative hypotheses about the life cycle of the early vascular plants, the transformation hypothesis and the interpolation hypothesis. If Rhynia and Sciadophyton are the two generations of one species, which hypothesis would be favored? Briefly describe the other hypothesis.
Chapter 30 Solutions
Campbell Biology
Ch. 30.1 - What features not present in seedless plants have...Ch. 30.1 - Prob. 2CCCh. 30.1 - WHAT IF? If a seed could not enter dormancy, how...Ch. 30.2 - Use examples from Figure 30.7 to describe how...Ch. 30.2 - Explain how the pine life cycle in Figure 30.4...Ch. 30.2 - Prob. 3CCCh. 30.3 - It is said that an oak is an acorns way of making...Ch. 30.3 - Compare and contrast a pine cone and a flower in...Ch. 30.3 - WHAT IF? Do speciation rates in closely related...Ch. 30.4 - Explain why plant diversity can be considered a...
Ch. 30.4 - Prob. 2CCCh. 30 - Describe how the parts of an ovule (integument....Ch. 30 - Although there are fewer Ihan 1,000 spedes of...Ch. 30 - Explain why Darwin called the origin of...Ch. 30 - Prob. 30.4CRCh. 30 - Where in an angiosperm would you find a...Ch. 30 - Prob. 2TYUCh. 30 - Prob. 3TYUCh. 30 - Which of thc following is not a characteristic...Ch. 30 - Gymnosperms and angiosperms liave tlie following...Ch. 30 - DRAW IT Use the letters a-d to label where on the...Ch. 30 - EVOLUTION CONNECTION The history of life has been...Ch. 30 - Prob. 8TYUCh. 30 - WRITE ABOUT A THEME: ORGANIZATION Cells arc the...Ch. 30 - Prob. 10TYU
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- Please match the terms with their definition. Zygomorphy V [Choose ] The dispersal phase of the haploid microgametophyte of a seed plant. Based on mutant phenotypes observed in model species, pick genes which seem likely to be involved with changes in Your a given character state evolves more than once within a phylogeny in different organisms but not present in their last common A branch bearing flowers. A sterile leaf-like structure associated with an ovule. It encloses the nucellus or megasporangium. The mature ovary wall the same organ in different organisms under every variety of form and function due to evolutionary development from the same Having fused carpels. The presence of one plane of symmetry in a flower, or floral bilateral symmetry. Syncarpous Inflorescence Pollen grain [ Choose ] Pericarp [ Choose ] Integument [ Choose ] Candidate gene approach [ Choose ] Homoplasy [ Choose ] > >arrow_forwardSelf-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.arrow_forwardThe work of plant taxonomists of the 20th century who identified /established the different families of flowering plants based mainly on morphological and anatomical details is still valued and being used today, despite the general acceptance of the Angiosperm Phylogeny Group (APG) as a classification system for the flowering plants. Explain why.arrow_forward
- In the space below, diagram generalized haplontic, diplontic, and alternation of generations life cycles. Make sure to indicate whether each stage in the life cycle is haploid or diploid, and unicellular or multicellular. Also write the stage's name (e.g., zygote, gametophyte, spore, etc.) if it has one. You don't need to draw the stages - e.g., for a zygote you can just write "zygote, unicellular, 2N". Also make sure to indicate where exactly in the life cycle meiosis takes place. Please draw and label these as possible clearly as Haplontic Diplontic Alternation of generationsarrow_forwardDescribe the orders ANGIOSPERMS-EUDICOTS : ERICALES, GENTIANALES, LAMIALES, SOLANALES, APIALES AND ASTERALES in terms of plant habit, reproductive type (monoecius/dioecius), leaf type, leaf shape, floral characteristics, fruit morphology, seed size/shape, and other distinct features.arrow_forwardThe number of taxa exhibiting asexual reproduction is drastically reduced in the higher plants (angiosperms) and higher animals (vertebrates) as compared with lower groups of plants and animals. Analyse the possible reasons for this situation.arrow_forward
- lides chrome extension://bpmcpldpdmajfigpchkicefoigmkfalc/views/app.html ent.docx BIU A 1. Of the following characteristics of plants, which are inherited (shared with green alg are new (evolved within the plant lineage only)? a) Multicellular sporangia b) Presence of chloroplasts c) Sessile (doesn't move) d) Embryos supported by parents e) Apical meristems f) Cellulose cell walls 2. Designate each of the following as haploid or diploid. a) Green part of a moss b) Liverwort spem c) Fern sporophy te d) Cells making up the antherid ium of a fem gameto phyte e) Plant spore f) Plant embryo 3. Fill in the blank: a) A plant spore grows into a b) Eggs are produced inside c) A plant zygote grows in to a d) Sporangia produce 4. What group of plants (bryophy tes. lycophytes, pteridophytes/ferns, seed plants/spermatop vascular plants/tracheophytes, plants/embryophy tes) is being described? Choose the group best fits the description. a) Can produce lignin-reinforced tissues (e.g., xylem, sclerench…arrow_forwardDescribe the interrelationships among the different gymnosperm lineages, as inferred from the two cladograms. What are the common patterns you see in the two figures, and in what ways do they differ?arrow_forwardLabel the diagram which features an illustration of a portion of the sporophyte of Selaginella with strobili, and a photomicrograph of the longitudinal section of a mature strobilus. Indicate whether each of the structure you identified is haploid (n) or diploid (2n)arrow_forward
- Draw a simple diagram illustrating alternation of generations in plants, including the sporophyte and gametophyte generations, spores, gametes (eggs and sperm), meiosis, and fertilization. Be sure to indicate whether each generation or kind of cell is haploid or diploid.arrow_forwardCompare and contrast the alternation of generations in pines and angiosperms. This must be very detailed and include all major structures and process involves. Be sure to include when the plants are haploid or diploid. You can use a list as long as order is clear. Be sure to clearly write out structure and processes and indicate which things are the same and which are different.arrow_forwardDraw a of alternation of generation of Mnium, a Genus of Mosses. Label all structures. Include both haploid and diploid structures. Draw the structures before fertilization and after fertilization. Indicate when fertilization occurs and how. Be sure to show the cycle from one generation to the next.arrow_forward
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