(Science: botany) a change in the character of a cell wall, by which it becomes harder. It is supposed to be due to an incrustation of lignin. Origin: cf. F. Lignification. See lignify. The depositing of lignin in cell walls by plants that creates wood...
Freshwater ecosystem is comprised of four major constituents, namely elements and compounds, plants, consumers, and deco..
Bryophytes (nonvascular plants) are a plant group characterized by lacking vascular tissues. They include the mosses, th..
Meet some of New Zealand's unique fauna, including endemic insects, frogs, reptiles, birds, and mammals, and investigate..
Plants in lentic habitats have features not found in terrestrial plants. They acquired these features as they adapt to t..
The hominid family diversified from the apes around 6 to 8 million years ago. Since then, the evolutionary path has prov..
The human respiratory system is an efficient system of inspiring and expiring respiratory gases. This tutorial provides ..
