Dan
a title of honor equivalent to master, or sir. Old dan Geoffry, in gently spright The pure wellhead of poetry did dwell. (Spenser) What time dan Abraham left the Chaldee land. (Thomson)
Origin: oe. Dan, danz, OF. Danz (prop. Only nom), dan, master, fr. L. Dominus. See dame.
(Science: chemical) a small truck or sledge used in coal mines.
Origin: Etymol. Uncertain.
Plants, like animals, produce hormones to regulate plant activities, including growth. They need these hormones to respond well to their environment and to sustain growth, development, and dispersal. Plant biologists recognize five major groups of plant hormones: auxins, gibberellins, ethylene, cytokinins, and abscisic acid. Find out in this guide the importance of each hormone in the life of a plant...
The sea was teeming with life. Eventually, through reproduction and continued variation, fish came about. There are over 20 000 species of fish, all of which have diversified over time. In this tutorial, the different factors that helped shape fish as we know them today are presented...
There are more species of insects than any other species combined. This surely illustrates that insects have the selective advantages that allow them to take the most advantage of the environment that they live in. Read more about the evolution of insects in this tutorial. Find out the reasons as to why insects enjoyed their continued existence over such a long period of time...
This tutorial deals with the structure and function of flowers, fruits, and seeds. Also included here are the types of fruits, fruit dispersal mechanisms, and seed germination. The distinctions between dicots and monocots, the two major groups of flowering plants, are presented in this tutorial...
Life, as we know it today, is presumed to have started in the sea and many of them were likely eukaryotic animal-like organisms. Because of the expanding diversity of animal life forms, taxonomists eventually came up with a classification scheme to group them into various phyla. Know more about the early animals that were likely the first ones to roam the ancient seas through this tutorial...
