Moss: Prechart Review

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Moss: Prechart Review
2014-04-09 12:42:55
Plant Kingdom
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  1. Structure: 

    Stems of Sphagnum gametophytes: __
    Stems of gametophytes and sporophytes have a __ 
    Has __which are similar to __(the tissue is __)
    • bear clusters of branches
    • central strand of water-conducting tissue called hadrom (the cells are hydroids)
    • leptoids 
    • phloem 
    • leptom
  2. Structure of organs cont.

    Both branches and stems bear __, but __ whereas __

    Leaves are __ and have __ and __
    When the capsule falls off, it shows the operculum, which falls off and reveals the peristome
    • leaves
    • stem leaves have little/ no chlorophyll
    • most branch leaves are green
    • one cell layer thick
    • hyaline cells
    • narrow green or occasionally red-pigmented living cells
  3. Location
    • Epiphytes: may grow on other organisms, but are not parasitic on them
    • Endemic (restricted to limited geographic areas): tropical cloud forests and high temperature places; temperate; many aquatic or dry habitat
  4. Reproduction 

    moss: formation of __ (antheridia and archegonia) at __; both __ are __

    Antheridia clustered in __
    __in the winter and four months later mature spores are __
    Some gametophytes are __
    __: asexual 
    • narrow green or occasionally red-pigmented living cells
    • ends of special branches at the tips of moss gametophytes
    • arch and anth are produced by the same plant
    • splash cups
    • Fertilization 
    • discharged
    • unisexual
    • Fragmentation
  5. Structure of sporophyte:

    Sporophyte: __ (spherical); raised on a __; has a __; at the top of the capsule is an __; __ that is attached to gametophyte tisshe for nourishment
    • red to blackish-brown capsule
    • pseudopodium
    • short seta
    • operculum, separated from the rest of the capsule by a circular groove
    • foot
  6. Structure of gametophyte:

    First stage of the gametophyte is the __
    Moss gametophytes can be __; all have multiple __ and the leaves are __ except at __
    • protonema (one cell layer thick and resemble filamentous green algae
    • super long or super small
    • multicellular  rhizoids
    • one cell layer thick except at the midrib