Article: Reproduction, Alternation of Generations and
Plant Sciences;      682 words ......the rule in land plants. In bryophytes the gametophyte is the ecologically...sporophytes and gametophytes. Sporophytes...different from gametophytes as a result...pressures. In land plants, for example...consequence, gametophytes, which develop...larger, and ...

Article: Bryophyta
The Columbia Encyclopedia, Sixth Edition;      562 words ..., division of green land plants that includes the mosses...bryophyte is the haploid, or gametophyte , generation of the plant...with vascular systems. The gametophyte reproduces sexually, giving...grows directly out of the gametophyte and is at least partly dependent...

Article: embryophytes
A Dictionary of Earth Sciences;      47 words ...embryophytes Land plants, including those from which all later terrestrial groups are descended. Gene sequences and comparative morphology suggest land plants form a monophyletic group, descended from Charophyceae . Embryophyte...

Article: foot
A Dictionary of Plant Sciences;      21 words ...foot That part of the sporophyte embryo , especially in Bryophyta , which connects it to the gametophyte and absorbs nutrients from it.

Article: haplobiont
A Dictionary of Plant Sciences;      20 words ...haplobiont A plant that lacks 1 of the 2 generations in its life cycle and exists only as the gametophyte or sporophyte generation.

Article: Chlorophyta
A Dictionary of Earth Sciences;      144 words ......which are typically green in colour. In common with higher land plants, green algae include chlorophylls a and b among their principal...starch. Consequently it is believed that the ancestors of land plants must have belonged to this group. The organisms take many...

Article: liverwort
The Columbia Encyclopedia, Sixth Edition;      111 words ......Marchantiopsida. Mosses and liverworts together comprise the division Bryophyta , primitive green land plants (see moss ; plant ); some of the earliest land plants resembled modern liverworts. In contrast to mosses, most liverworts grow prostrate and...

Article: Evolution of Plants
Plant Sciences;      700+ words ......evidence indicate that the earliest land plants resembled modern bryophytes, the liverworts...which DNA can be obtained. The Origin of Land Plants DNA, structural, and biochemical evidence...also marks liverworts as the modern land plants that appeared earliest; liverworts have...

Article: exserted
A Dictionary of Plant Sciences;      21 words ...exserted Protruding, e.g. of stamens projecting beyond a corolla , or of a moss capsule projecting beyond the leaves of the gametophyte .

Article: gametophyte
A Dictionary of Biology;      82 words ...gametophyte The generation in the life cycle of a plant that bears the gamete-producing sex organs. The gametophyte is haploid . It is the dominant phase in the life cycle...example, in angiosperms the pollen grain is the male gametophyte and the embryo sac is the female gametophyte. See also...

Article: conchocelis stage
A Dictionary of Plant Sciences;      19 words ...conchocelis stage In the life cycle of Porphyra , a haploid stage preceding the stage that is recognized as the gametophyte .

Article: Bryophytes
Plant Sciences;      700+ words ......recognize two kinds of land plants: bryophytes (nonvascular land plants) and tracheophytes ( vascular land plants). Bryophytes are small...cycle is the haploid , gametophyte generation rather than...nutritionally dependent on their gametophytes, and consist of only ...

Article: Research and Markets: Developing Biofuel from Algae Examines the Potential of Algae to Act as a Viable Fuel in the near Future.
Business Wire;  December 17, 2008 ;     593 words ......simple because they lack the many distinct organs found in land plants. Though the prokaryotic cyanobacteria (commonly referred to...origin. Algae lack the various structures that characterize land plants, such as phyllids and rhizoids in nonvascular plants, or leaves...

Article: sporogonium
A Dictionary of Biology;      34 words ...sporogonium The sporophyte generation in mosses and liverworts. It is made up of an absorptive foot , a stalk ( seta ), and a spore-producing capsule . It may be completely or partially dependent on the gametophyte .