able 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 features

able 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 features

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter28: Seedless Plants

Section: Chapter Questions

Problem 5TYK: Which feature(s) do ferns share with all other land plants? a. sporophyte and gametophyte life cycle...

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The rhizome of ferns like the one shown in the previous question, have a dictyostele vascular cylinder. In your own word, what does this term mean and how does it differ from a protostele seen in the Lycophytes? Edit View Insert Format Tools Table MacBook Pro G Search or type URL $4 & 2 4 W E Y # 3
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…
9. Label the sporangia, indusium, leaf, and spores in Figure 4 below. 01 Figure 4. Cyrtomium leaf c.s., sorus l.s. 10. Explain the mechanism of spore dispersal in ferns with sori 11. In what way is this mechanical method of spore dispersal similar to that in the bryophytes? Photo by Carolyn Alling Most ferns produce only one kind of spore and are therefore homosporous. Upon germination, the spore, the first cell of the gametophytic generation, gives rise to a heart shaped, bisexual gametophyte, called a prothallus. 12. What type of nuclear division produces the many celled gametophyte from a spore? Examine the fern gametophytes under the dissecting scope. Note the many rhizoids emerging from the lower, or ventral, surface. Among the rhizoids you will find antheridia, some of which may contain sperm cells. Nearer the notch of the "heart" you will find the archegonia. In order to visualize their shape in three dimensions, you will have to focus up and down on the archegonia. Examine the…
Of the following structures, which one can you find in confers and flowering plants, but NOT in ferns? Spores Roots Seeds Vascular tissue
The rhizome of ferns like the one shown in the previous question, have a dictyostele vascular cylinder. In your own word, what does this term mean and how does it differ from a protostele seen in the Lycophytes? Edit View Insert Format Tools Table
The gametophyte of Pteridophytes is inconspicuous in comparison to the mosses. They are also commonly monecious (single "house", or thallus for male and female gamete production). The photo below shows a whole mount (w.m.) of a fern gametophyte at 40x. Make a sketch of the specimen and label the following structures: archegonium, antheridium, mature gametophyte (a.k.a. prothallus), rhizoids 90
Figure 1: Fern prothallus (https://en.wikipedia.org/wiki/File:Fern young sporophyte WM 2.jpg) 9) Label the following structures on Figure 1: • prothallus (gametophyte) sporophyte
The gametophyte of Pteridophytes is inconspicuous in comparison to the mosses. They are also commonly monecious (single house for male and female gamete production). The photo below shows a whole mount (w.m.) of a fern gametophyte at 4x. Make a sketch of the specimen and label the following structures: archegonium, antheridium, mature gametophyte (prothallus), rhizoids MacB
The gametophyte of Pteridophytes is inconspicuous in comparison to the mosses. They are also commonly monecious (single house for male and female gamete production). The photo below shows a whole mount (w.m.) of a fern gametophyte at 4x. Make a sketch of the specimen and label the following structures: archegonium, antheridium, mature gametophyte (prothallus), rhizoids
Figure 25.14 Which of the following statements about the moss life cycle is false? The mature gametophyte is haploid. The sporophyte produces haploid spores. The calyptra buds to form a mature gametophyte. The zygote is housed in the venter.
The following structures are found on the underside of fern leaves and contain sporangia: sori rhizomes megaphylls microphylls
Microphylls are characteristic of which types of plants? mosses liverworts club mosses ferns