Q: Plants having vascular tissue without seeds O A. Angiosperm O B. Pteridophytes O C. Bryophytes O D.…
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Q: Which group evolved first? A. Gymnosperms B. Angiosperms C. Mosses D. Ferns
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Q: What evidence would you need to distinguis between an angiosperm and gymnosperm?
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A: The gametophyte is the dominant generation in:
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A: Ferns are unique in land plants in having two separate living structures, so the ferny plant that we…
Q: Many of the adaptations of the Bryophytes and Seedless Vascular Plants resulted in? the production…
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Q: Microphylls, Megaphylls, Or Other? Homosporous Vascular Motile Pollen Plant Group (example) Dominant…
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A: Pollination refers to the process through which pollen grains from the male reproductive part of a…
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- Characteristics Thallose Liverworts Leafy Liverworts Hornworts Mosses Representative Species Dominant stage Thallus types "Leaf" margin "Leaf" arrangement Midrib or costa in the "leaf" (+/-) Gemmae (+/-) Gametophores (+/-) Sporophyte parts Sporophyte life span (short/long) Chloroplasts in the sporophyte Structures for spore dispersalThe photo below is a longitudinal section (I.s.) of the strobilus of Selaginella at 40x. How does this photo illustrate the importance of the previous question?What specific structure is indicated by the pointer? Chlorenchyma What phylum does this plant belong? Coniferophyta
- What is sporophyll? A strobilus? Sporophyll Strobilus megasporeTable 3.1. General features of the major groups of ferns and allies. Feature Psilophyta Lycophyta Equisetophyta Pterophyta Representative Psilotum Lycopodium Selaginella Isoetes Equisetum Nephrolepis species Dichotomously branched? Differentiated into roots, stems, leaves? Homosporous or Heterosporous? Type of "Leaves" Type of stele Sporangia Other distinct featuresOne of the genera of Lycophytes are the Selaginellaceae. Like other Lycophytes, Selaginellids bear their spores in a strobilus but they have an unusual strobilus. Which answer below best describes this difference? O their spores are always diploid O they are gaemtophyte dominant O their spores are heterosporous O their strobilus is dependnent upon the female gametophyte like mosses APR 25 étv MacBook Pro G Search or type URL @ #3 % %24
- e th aci st SJ I the size, shape, and arrangement of the leaves, which are microphylls, small leaves with only one vein. Examine the roots and their relationship to the stem. In Selaginella, the roots grow downward from a leaf-bearing stem. The sporangia of the Lycopodiophyta are borne on leaves essentially similar to the sterile leaves of the plant. The sporangium bearing leaf is called a sporophyll. In Selaginella and Lycopodium, the sporophylls occur in compact aggregates called cones, or strobili. 1. Label the microphylls and strobili in the Figure 1 below. Figure 1. Lycopodium sp. Examine the prepared slide of a mature Lycopodium strobilus. (See text Figure 17-16, pages 406 and 407.) Note that Lycopodium, like most species in the Lycopodiaceae, is homosporous and only produces one type of spore. iw ow del ain 2. Label the spores in Figure 2 below. qXI 92 Laibaquari Figure 2. Lycopodium strobilus l.s. 3. Given that Lycopodium is homosporous, would you expect its gametophytes to be…One of the genera of Lycophytes is Selaginella. Like other Lycophytes, Selaginellids bear their spores in a strobilus but they have an unusual strobilus which sets them apart from their relatives. Which answer below best describes this distinction? their spores are always diploid O they are gametophyte-dominant their spores are heterosporous their strobilus is dependnent upon the female gametophyte like mossesMale mosses often possess aA. archegoniumB. calyptraC. splash cupD. all of the above Release of moss spores is aided byA. protonemataB. gametonemataC. rhizoidsD. peristomial filaments
- Microphylls are characteristic of which types of plants? mosses liverworts club mosses fernsThe following structures are found on the underside of fern leaves and contain sporangia: sori rhizomes megaphylls microphyllsClub mosses, horsetails, and ferns are ___ plants. a. multicelled aquatic b. nonvascular seed c. seedless vascular d. seed-bearing vascular