embryophytes造句

• They are a subset of the embryophytes or land plants.
• Nonvascular land plants are embryophytes that lack the vascular tissues xylem and phloem.
• Bryophytes consist of all non-vascular land plants ( embryophytes without vascular tissue ).
• The land plants, or Embryophytes, are thought to have emerged from the Charophytes.
• The oldest known fossils of embryophytes date from the Ordovician, though such fossils are fragmentary.
• Embryophytes have two features related to their reproductive cycles which distinguish them from all other plant lineages.
• By contrast, charophyte green algae and land plants ( embryophytes ) undergo open mitosis without centrioles.
• One common definition includes the land plants, the embryophytes ( bryophytes and vascular plants ) and the green algal group Charophyta.
• Indeed, even those embryophytes that have returned to the water lack a resistant wall, thus don't bear trilete marks.
• Living embryophytes include hornworts, liverworts, mosses, ferns, lycophytes, gymnosperms and flowering plants, and emerged from Charophyte green algae.
• However, the name Plantae is ambiguous, since it has also been applied to less inclusive clades, such as Viridiplantae and embryophytes.
• In plants, matrotrophy is considered a critical evolutionary development preceding the origin of embryophytes and therefore essential to the evolution of land plants.
• In the bryophytes the sporophyte remains dependent on the gametophyte, while in all other embryophytes the sporophyte generation is dominant and capable of independent existence.
• Some green algae of the class " Charophyceae " use phragmoplasts similar to those in embryophytes to organize and guide the growing cell plate.
• With very few exceptions, embryophytes obtain their energy by photosynthesis, that is by using the energy of sunlight to synthesize their food from carbon dioxide and water.
• However, the division between chlorophytes and streptophytes and the evolution of embryophytes from within the latter group, as shown in the cladogram below, are well established.
• All the streptophyte algae can be grouped into one classification of the Viridiplantae varies considerably, resulting in widely different ranks being assigned to the embryophytes, from kingdom to class.
• On a microscopic level, the cells of embryophytes are broadly similar to those of green algae, but differ in that in cell division the daughter nuclei are separated by a phragmoplast.
• The phragmoplast can only be observed in Embryophytes, that is the bryophytes and vascular plants, and a few advanced green algae, specifically " Coleochaete " in the Division Charophyta.
• Their rationale was that " If the major clades of green algae are recognized as classes, then all land plants, the embryophytes, should be included in a single class . . ."