"Phototaxis" Pronounce,Meaning And Examples
"Phototaxis" Natural Recordings by Native Speakers
"Phototaxis" Meaning
Phototaxis is the movement of an organism in response to the direction, magnitude, or quality of light. The movement is usually towards the source of light, a phenomenon called positive phototaxis, or away from the light, a phenomenon called negative phototaxis.
"Phototaxis" Examples
In science, phototaxis refers to the movement of an organism or a part of an organism towards or away from light. Many plants exhibit positive phototaxis, growing their stems towards light sources. Flower bulbs germinate by developing tiny shoots and leaves which grow up towards the surface of the ground, exhibiting phototaxis as they seek out sunlight for photosynthesis. In some experiments, scientists have demonstrated that bacteria exhibit positive phototaxis, moving towards light sources to absorb essential nutrients. Certain types of phototaxis occur in marine species that migrate vertically through the water column in response to changes in daylight, complementing the song migration patterns observed in air-breathing species. During maturation, the term phototaxis also refers to the alignment of the crystalline cations in magnetic storage media like magnetic films or tape recorder media, which affects its magnetic properties, such as sensitivity and read unreliability.
"Phototaxis" Similar Words
Photosynthesising
The process by which plants, algae, and some bacteria convert light energy from the sun into chemical energy in the form of organic compounds, such as glucose, that are used to fuel the organism's activities and growth.
Photosynthesize
Photosynthesized
Produced or formed through photosynthesis, a process in which green plants, algae, and some bacteria convert light energy, usually from the sun, into chemical energy stored in glucose.
Photosynthesizing
Photosynthetic
Photosynthetically
Photosystems
Phototactism
Phototactism (or photoactism) is a rare term referring to a stimulus-response reaction to light. It can be seen as a form of phototropism, a phenomenon where an organism grows or moves towards or away from light. However, phototactism specifically describes a nervous response wherein an animal senses and reacts to light using its skin or other bodily tissues.For example, some invertebrates, such as sea creatures and certain worms, exhibit phototactic responses. When light is applied to their sensitive skin, they move towards (positive phototactism) or away (negative phototactism) from the light source in a reflex reaction. This is different from phototropism, which involves the actual growth towards or away from light sources, rather than just a reflex movement.
Phototaxy
Phototherapeutic
Phototherapy
Photothermal
Photothermolysis
Phototonic
Phototonous
Phototopography