In this article we will discuss about the asexual and sexual modes of reproduction in marchantia with the help of diagrams. Asexual Reproduction in Marchantia: Asexual propagules – gemmae – occur in a gemma-cup (Fig. 2.6A). On the floor of the cup are seen numerous mucilage papillae and many biconvex discoid gemmae (Fig. 2.7E). A […]
Reproduction in Marchantia (With Diagram) | Bryophytes | Botany
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Morphology of Selaginella (With Diagram) | Pteridophytes | Botany
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In this article we will discuss about the morphology of selaginella with the help of diagrams. Selaginella with about 700 species is worldwide (tropics to subarctic) in distribution. It is abundant in tropics, with a wide range in growth habits and habitats. Many species are flat creepers (Fig. 8.1 A) on the ground (S. kraussiana). […]
Heterospory in Selaginella | Pteridophytes | Botany
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The production of two kinds of spores differing in structure and function, the smaller one producing the male gametophyte and larger one producing the female gametophyte, is termed heterospory. For the first time distinct heterospory (structural as well as functional) is evident in pteridophytes; but out of several hundred forms in the group, only 9 […]