Search results
Results From The WOW.Com Content Network
Tropisms are usually named for the stimulus involved; for example, a phototropism is a movement to the light source, and an anemotropism is the response and adaptation of plants to the wind. [2] Tropisms occur in three sequential steps. First, there is a sensation to a stimulus. Next, signal transduction occurs. And finally, the directional ...
Tissue tropism is the range of cells and tissues of a host that support growth of a particular pathogen, such as a virus, bacterium or parasite. [1] [2]Some bacteria and viruses have a broad tissue tropism and can infect many types of cells and tissues. [1]
A common example is a plant root growing in humid air bending toward a higher relative humidity level. This is of biological significance as it helps to increase efficiency of the plant in its ecosystem. The process of hydrotropism is started by the root cap sensing water and sending a signal to the elongating part of the root.
A germination rate experiment. Plant physiology is a subdiscipline of botany concerned with the functioning, or physiology, of plants. [1]Plant physiologists study fundamental processes of plants, such as photosynthesis, respiration, plant nutrition, plant hormone functions, tropisms, nastic movements, photoperiodism, photomorphogenesis, circadian rhythms, environmental stress physiology, seed ...
Phototropism is one of the many plant tropisms, or movements, which respond to external stimuli. Growth towards a light source is called positive phototropism , while growth away from light is called negative phototropism .
Daisies (Bellis perennis) face the Sun after opening in the morning and will follow the Sun through the dayHeliotropism, a form of tropism, is the diurnal or seasonal motion of plant parts (flowers or leaves) in response to the direction of the Sun.
For example, there was an indoor pool and a secret bedroom built for the first owner's mistress. In the most expensive home I toured, I spotted an oxygen system to help combat altitude sickness.
Dengue is an example of a mosquito-borne flavivirus that causes Dengue fever. While endothelial cells are not the major cell type Dengue targets, the virus binds to various cell surface receptors on endothelial cells with particular productive infection via heparan sulfate -containing cell surface receptors. [ 14 ]