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Nonvascular Plants (Division Bryophtya (Mosses) (sporophyte generation…

- - - - all moss stems have leaves
      - = leafy stems
      - grows from apical meristem that contains prominent apical cell
      - leaves aligned in 3 rows; most with midrib
      - cuticle only on upper surface of leaves
      - no stomata on leaves
      - stems always slender with little tissue differentiation
  - - - leptoid cells
        
        similar to sieve cells
        
        lack nuclei at maturity
      - hydroid cells
        
        lack cytoplasm at maturity
        
        conduct water and dissolved minerals
    - - lack hydroids and leptoids
      - conduct water along the exterior of their stems by capillary action
      - sugar moves slowly thru parenchyma cells
      - rhizoids
        
        trichome-like structures at the base of the stem
        
        #
  - - - numerous small chloroplasts in each cell
- - - - leaves have two rounded lobes with no midrib
    - - not leafy at all; ribbon like or heart shaped
      - have air pores-> no guard cells and cannot be closed
      - antheridiophore
        
        umbrella shaped outgrowth (in some)
      - archegoniophores= stalk with radiating fingers (in somes)