1. | develops from the primary protonema. |
2. | consists of upright, slender axes bearing spirally arranged leaves. |
3. | is attached to the soil through unicellular and unbranched rhizoids. |
4. | lacks the sex organs. |
I: | Protonema is a gametophyte stage that is creeping, green, branched and frequently filamentous. |
II: | Leafy stage bears sex organs and is attached to the soil through multicellular and branched rhizoids. |
III: | Sex organs are produced at the apex of the leafy shoot. |
IV: | They have an elaborate mechanism of spore dispersal. |
1. | Funaria | 2. | Marchantia |
3. | Polytrichum | 4. | Sphagnum |