In this article we will discuss about the life cycle of bryophytes with the help of diagrams. The life cycle of a bryophyte involves an alternation of generations—the gametophyte and sporophyte, which are different in morphology (heteromorphic) and differ in their level of ploidy (heteroploid). The gametophyte or gamete-producing generation is distinct in its morphology […]
Life Cycle of Bryophytes | Archegoniate Plants | Botany
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Reproduction in Psilotum (With Diagram) | Pteridophytes | Botany
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in this article we will discuss about the modes of reproduction in psilotum with the help of diagrams. Stout aerial branches bear large conspicuous sporangia (Fig. 7.1 A). Each sporangium is a 3-lobed structure (Fig. 7. 1B, C). It is borne on a forked appendage. It has been described as: (a) Trilocular sporangium (b) Trisporangiate […]
Diagram of Psilophytales | Pteridophytes | Botany
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An earliest record of vascular plants is from Devonian of Canada (Gaspe Peninsula, Quebec). Although the compressions were fragmentary, a reconstruction revealed slender axes arising from a subterranean rhizome system (Fig. 7.3A). The rhizome lacked roots but had rhizoids. The aerial axes were dichotomously branched with scale-like appendages and terminated into sporangia. Because of its […]