In this article we will discuss about:- 1. History of Bryophytes 2. Origin of Bryophytes 3. Meaning 4. Characteristics 5. Vegetative Reproduction 6. Ecological Importance 7. Affinities 8. Life Cycle. History of Bryophytes: The fossil history of the bryophytes is very meagre due to the fragile nature of the plant body. The stems orthalli do not possess lignified vascular tissue [...]
In this article we will discuss about the vegetative and sexual modes of reproduction in Anthoceros with the help of diagrams. Vegetative Reproduction in Anthoceros: Vegetative Propagation takes Place by the following Four Methods: (a) By Progressive Death and Decay of the Older Parts of the Thallus (Fragmentation): Vegetative reproduction often rakes place by the decay of the older [...]
In this article we will discuss about the classification of pteridophyta. 1. Class: Psilotopsida: The members of the class Psilotopsida show close resemblance in fundamental characteristics to the Silurian and Devonian members of Rhyniopsida (e.g., Rhynia, Cooksonia), Zostero- phyllopsida (e.g., Zosterophyllum) and Trimero- phytopsida (e.g., Trimerophyton, Psilophyton). Psilotopsida includes only two living genera viz., Psilotum and Tmesipteris. Characteristic Features of [...]