The following points highlight the four major steps involved in the construction of taxonomic groups. The steps are: 1. Operational Taxonomic Units 2. Unit Characters 3. Estimation of Resemblances 4. Cluster Analysis. Taxonomic Group: Step # 1. Operational Taxonomic Units (OTUs): Operational taxonomic unit is the basic unit in numerical taxonomy. It can be an individual, species, genus, family, order or [...]
The upcoming discussion will update you about the differences between Angiosperm and Gymnosperm. 1. Vascular Tissue: Angiosperms have vessels in secondary xylem. However, some Magnoliid angiosperms lick vessels (e.g. the Winteraceae, Tetracentraceae, Trochodendraceae, etc.). Most gymnosperms lack vessels, except the Gnetales. Hence, the presence of vessels cannot be used as evidence that a plant is an angiosperm. 2. Leaves: Angiosperms [...]
The upcoming discussion will update you about the difference between monocot and dicots. a. Number of Cotyledons: The actual basis for distinguishing the two classes of angiosperms is the number of cotyledons found in the embryo, and is the source of the names Monocotyledonae (one cotyledon) and Dicotyledonae (two cotyledons). b. Venation: In monocots, there are usually a number of [...]