b112 lab test Bryophytes
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- Where are plants though t o have evolved from ?
- green algae
- What are the 3 main things that prove that prove the evolutionary relationship between plants and green algae?
- 1. identical food reserves (starch) 2. Same PSYN pigments 3.structures are similar
- In land plants, the diploid (2N) _________ alternates with the haploid (1N) ____________.
- sporophyte gametophyte
- What means " the same alterations in generations?"
- isomorphic
- What means" different alterations in generations?"
- Heteromorphic
- Liverwarts belong in what phylum?
- Phylum Hepatophyta
- Liverwarts are the common name for what
- Marchantia
- Why is the body of the a Marchantia referred to as a "thallus" liverwart?
- bc it is flattened and has little tissue differentiation
- Is the thallus part of the gametophyte or sporophyte generation?
- gametophyte
- Are the cells of the thallus, haploid or diploid?
- haploid
- What has the function to anchor the thallus to the substrate?
- Rhizoids
- What is the function of the gemmae in the thallus liverwart?
- to reproduce asexually
- In the antheridiophores of the thallus liverwarts is it a male or female reproductive structure?
- MALE
- What cells are produced by the antheridia of the antheridiophores?
- sperm
- The sperm that is produced by the antheridia of the antheridiophores..... is it haploid and diploid?
- haploid
- How are the archegoniophores and antheridiophores different?
- antheridiophores are flat on the surface archegoniophores are "umbrella-like"
- What is the female sex organ that develops on the archegoniophore called?
- archegonia
- What cells form in the archegonia?
- egg
- What plant has no ovaries?
- female thallus
- Is the egg of the female thallus (=archegoniophores) haploid or diploid?
- haploid
- What phylum is Mosses in?
- Bryophyta
- Why are mosses not considered to have true leaves, stems, and roots?
- bc they lack vascular tissue
- What are the rhizoids function on the mosses
- they provide support
- Are the leaves, stems, and rhizoids of the mosses considered to part of the gametophyte or sporophyte generation?
- gametophyte
- If a plant has separate male and female parts, it is called
- dioecious
- What structure swims down the neck of the archegonia?
- sperm cell
- The fertilization of the edd leads to the formation of what generation?
- sporophyte
- Sperm can travel______ distances to fertilize the eggs
- short
- The cells of the sporophyte, are they diploid, haploid, or triploid?
- diploid
- When observing the mature moss sporophyte attached to the gametophyte, the sporophyte grew out of WHAT specifid structure of the gametophyte?
- archegonia
- Are the spores that are produced from the sporangium haploid or diploid
- haploid
- What kind of cell division is responsible for producing the spores that are eventually produced inside of the sporangium?
- Meiosis
- IN mosses, spores may germinate to produce a filamentous _____________.
- Protonema
- Is the protonema , gametophyte or sporophyte
- gametophyte
- Because ferns, fern allies, gymnosperms, and flowering plants have xylem and phloem (vascular tissue), they are sometimes called_______
- tracheophytes
- Which life cycle is more dominant in the ferns and other vascular plants? gametophyte or sporophyte
- gametophyte
- What 3 groups of plants are referred to as fern allies
- ferns gymnosperms flowering plants
- What phylum is Club Mosses in
- Lycophyta
- the __________ is the specialized region of the stem that is found in club mosses that looks very similar a small club
- strobilus
- Are the leaves, stem, ans strobili of the club mosses part of the gametophyte or sporophyte generations?
- sporophyte
- What phylum is whisk ferns in
- phylum moniliophyta
- WHat group of often grow on the rhizomes of whisk ferns and absorbs h2O and minerals from the soil that get transferred to the plant
- rhizoids
- When the rhizoids grow on the rhizomes of the whisk ferns.. it is what?
- mutualism
- Are the leaves of Psilotum (whisk ferns) true or false
- FALSE - doesnt conduct PSYN
- Does Psilotum (whisk ferns) have true roots?
- no
- Does the Psilotum (whisk ferns) have sporangia?
- yes
- What phylum is horsetails in
- Phylum Moniliophyta
- Are nodes, internodes, leaves, rhizomes, and strobilus on the horsetails part of the sporophyte or gametophyte
- gametophyte
- What is found underneath the leaflets in the ferns? give the singular and plural form
- sing. -- > SORUS pl. --> SORI
- The spores in the fern will develop into the _______
- gametophyte
- The reproductive structure in which the sperm forms is the ________
- antheridia
- The structure in which the egg is formed is
- archegonia