Psilotum is commonly known as Whisk-fern. Salient features of Pilotum The sporophytes are dichotomously branched …

A stele is the central cylinder or core of vascular tissue in higher plants and …

The word cryptogams is a synthesis of two Greek terms kruptos meaning ‘hidden’ and gamos …

The term Pteridophyta was first coined by Haeckel. Eichler (1883) divided the plant kingdom into …

They are the earliest known vascular plants that originated in the Silurian period (400 million …

Telome theory was proposed by Walter Zimmerman (1952, 1965). This theory is based on fossil …

In the kingdom Fungi, there are two major phyla- Ascomycota and Basidiomycota. These two together …

Modern embryology seems to comprise three main disciplines. The first, or descriptive embryology, is a …

The phenomenon of polyembryony, i.e., the occurrence of more than one embryo in a seed, …

Apomixis maybe defined (Winkler, 1908, 1934) as the substitution for sexual reproduction (amphimixis) of an …