In this article we will discuss about the structure and reproduction in Pteris. Structure of Pteris: Sporophyte: The main sporophytic plant body is differentiated into root, rhizomatous stem and leaves (Fig. 7.102A). 1. Root: The primary root is ephemeral, and is replaced by a large number of adventitious roots developed all over the surface of the rhizome. The roots are [...]
In this article we will discuss about:- 1. Habit of Marsilea 2. Structure of Marsilea 3. Reproduction. Habit of Marsilea: The plants are herbaceous with rhizomatous stem, creeping on or just below the soil surface. The species of Marsilea are generally aquatic or amphibious in nature with their roots embedded in mud or damp soil. The aquatic species — M. [...]
In this article we will discuss about the structure and reproduction in Ophioglossum. Structure of Ophioglossum: Sporophyte: The sporophyte is differentiated into a subterranean rhizome with roots and spirally arranged leaves bearing sporangiferous spike (Fig. 7.92A). Stem: The stem is represented by a short, erect, subterranean rhizome. But in epiphytic species, it is horizontal and dorsiventral structure. The upper surface [...]