EXERCISE 13: THE NON-VASCULAR PLANTS

Cards (11)

  • Bryophyte- simplest green land plants
  • What are the 3 divisions of Non-vascular plants?
    Bryophyta (Mosses), Merchantiophyta (Liverworts), Anthocerophyta (Hornworts)
  • Explain the gametophyte and sporophyte in bryophytes.
    The gametophytes are leafy in appearance and the sporophytes grow conspicuously from the tips of the gametophyte plants
  • Seta- the stalk or stem-like structure in bryophytes
  • Rhizoid- root-like structure in bryophytes
  • antheridia- male sex organ in bryophyte
  • archegonia- female sex organ in bryophyte
  • Capsule- the structure that houses the spores and is held by the stalk-like seta and may be covered by a dunce cap of old archegonial tissue called the calyptra
  • Describe the gametophyte and sporophyte in liverworts (Hepatophyta)?

    The gametophyte has a well-defined upper and lower surface with either a thallose or leafy appearance while the sporophytes are small and inconspicuous
  • Gemmae cups- tiny cup-shaped structures that contain flat-shaped groups of cells which can produce a new gametophyte when dispersed
  • Explain the gametophytes and sporophytes in Hornworts (Anthocerophyta)?

    The gametophytes are always small and thallose and the sporophyte is large and persists as long as conditions are favorable