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DesLee26
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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
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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
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Location
- Epiphytes: may grow on other organisms, but are not parasitic on them
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- Endemic (restricted to limited geographic areas): tropical cloud forests and high temperature places; temperate; many aquatic or dry habitat
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Reproduction
Sphagnum 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
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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
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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
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