In this article we will discuss about the anatomy of psilotum with the help of a suitable diagram. Growth of rhizome and aerial branches takes place by divisions of a single apical cell. During dichotomy it divides equally, forming two apical cells which result in two meristems. Internal structure of rhizome varies with its diameter. […]
Anatomy of Psilotum (With Diagram) | Pteridophytes | Botany
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Anatomy of Selaginella (With Diagram) | Pteridophytes | Botany
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In this article we will discuss about the anatomy of selaginella with the help of a suitable diagram. Apical growth takes place by a single cell and its derivatives or by an apical meristem, comprising a group of cells. Branching occurs by a bifurcation of shoot apex into two apices, one of which overtops the […]
Factors Regulating Apogamy in Pteridophytes | Botany
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A number of factors are found to favour apogamous response in ferns. Some of the factors are: 1. Carbohydrate Nutrition 2. Mineral Nutrition 3. Gene Dosage 4. Light Quality 5. Hormones. Factor # 1. Carbohydrate Nutrition: Dark grown cultures of P. aquilinum do not form apogamous sporophytes even in the presence of sucrose. The increased […]