Callus
1. (Science: botany) undifferentiated plant tissue produced at wound edge callus tissue can be grown in vitro and induced to differentiate by varying the ratio of the hormones auxin and cytokinin in the medium.
2. (Science: pathology) mass of new bony trabeculae and cartilaginous tissue formed by osteoblasts early in the healing of a bone fracture.
With regard to the population size of a species and what factors may affect them, two factors have been defined. They ar..
Human Neurology deals essentially with the nervous system of humans. It also features the various theories put forward b..
Plants, like animals, produce hormones to regulate plant activities, including growth. They need these hormones to respo..
This tutorial looks at some of the communities in freshwater lentic habitats. For instance, symbiosis occurs in a commun..
This lesson is about the methods used for ecological research, such as quadrat and transect sampling, canopy fogging, an..
The sea was teeming with life. Eventually, through reproduction and continued variation, fish came about. There are over..
