Elicitor
(Science: plant biology) substance that induces the formation of phytoalexins in higher plants. May be exogenous (often produced by potentially pathogenic microorganisms) or endogenous (possibly cell wall degradation products).
The Earth's ecosphere was rapidly changing and throwing up a wide range of ecological niches that new adaptive organisms..
Ferns and their relatives are vascular plants, meaning they have xylem and phloem tissues. Because of the presence of va..
The blood sugar level is regulated by two hormones. The mechanism behind this type of negative feedback control is descr..
Autotrophs flourished, absorbing carbon and light. Soon after, primitive life forms that could assimilate oxygen thrived..
The evolution of the species of the genus "Homo" led to the emergence of modern humans. Find out more about human evolut..
Illusions are the perceptions and sensory data obtained from situations in which human error prevents us from seeing the..