LO-analysis is a means to elucidate the details of sexine pattern on the basis of light microscopic observations of a pollen grain and spore at different adjustments of the microscope. The ultra thin section (0.1-0.5 micron thick) and optical section of a pollen grain provide details of sexine. The term optical section refers to the view of a pollen grain [...]
In this article we will discuss about the aperture found in the pollen and spore wall of plants. It is a weak, preformed locus on the exine of spore and pollen through which the intra-exinous substance exits and pollen tube emerges during pollen germination. Apertures may be absent from a pollen grain or spore when they are termed as inaperturate/atreme/non-aperturate [...]
In this article we will discuss about the classification of plant tissues based on types of cell. There are two types of tissue — simple and complex. Simple tissues are homogeneous, i.e., they are composed of one type of cells only, which have similar morphological structure, perform same function and originate from the same mother cell. Parenchyma, collenchyma and sclerenchyma [...]