The shoots in Selaginella are characterized by the possession of meristems (dorsal and ventral) at each branching. These angle-meristems produce roots. In contemporary literature these outgrowths are designated as ‘rhizophore’. However, studies of auxin transport in these structures have conclusively proved their nature as root. Employing labelled auxin (C IAA), it is shown that auxin […]
Control of Root and Shoot in Selaginella | Pteridophytes | Botany
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Origin of Seed in Selaginella | Pteridophytes | Botany
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In this article we will discuss about the origin of seed in selaginella. An evolutionary sequence of origin of seed from homosporous form should involve: (a) Production of two kinds of spores, (b) Reduction in the number of functional megaspores, (c) Final reduction to a single megaspore in the sporangium, (d) Retention of megaspore within […]
Reproduction in Anthoceros (With Diagram) | Bryophytes | Botany
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In this article we will discuss about the asexual and sexual modes of reproduction in anthoceros with the help of diagrams. Asexual Reproduction in Anthoceros: By progressive death and decay of older parts of thallus vegetative reproduction is not so common in Anthoceros as in other liverworts, Instead the thallus is capable of producing many […]