protozoan cyst
infectious form of many protozoan parasites such as entamoeba histolytica, giardia lamblia, balantidium coli, etc., usually passed in the faeces and provided with a highly condensed cytoplasm and resistant cell wall.
Lotic communities have conditions that are rather harsh for typical plants. Thus, the diversity of plant species in loti..
This tutorial looks at the adaptations of freshwater plants for them to thrive in still water habitats. Familiarize your..
Plants need to regulate water in order to stay upright and structurally stable. Find out the different evolutionary adap..
Regulation of Biological Systems tutorials are focused on the modulation of biological systems from cell to population l..
The kidneys are responsible for the regulation of water and inorganic ions. Read this tutorial to learn about the differ..
Hormones are essential in the regulation of the activity of the various biological systems of the human body. The ineffi..