Detection implies consciousness, which photosynthetic organisms don't have. Everything that they do is an automatic process, built in to their biochemistry, rather than being a decision based upon something that they have observed. In the case of plants that grow toward the light, that has to do with growth hormone in strategic locations, which alters the way the plant grows. The plant does not actually know where to secrete the growth hormone, that is just an automatic response to certain envrionmental conditions. In the case of growing in an upward direction, that is easy, the growth hormone just sinks downward under the influence of gravity. The lowest part of the plant then grows the fastest, causing the plant to turn upward. And for plants whose leaves angle toward the sunlight, you just need a hormone secretion where the rate of photosynthesis is lower.
They are called phototrophs. They are photosynthetic organisms
No, there are some photosynthetic protists and some photosynthetic bacteria.
The light-sensitive pigment found in photosynthetic archaea is called bacteriorhodopsin. It is a type of retinal protein that helps these organisms convert light energy into chemical energy for photosynthesis.
It would be impossible for oxygen requiring organisms to exist before photosynthetic organisms because there was not oxygen in the atmosphere for these organisms to breathe. Photosynthetic organisms take carbon dioxide and water in and create oxygen as waste. Before these photosynthetic organisms existed there was not enough or any oxygen in the atmosphere for organisms requiring oxygen to survive.
Amoeba are not photosynthetic. They do not have chloroplasts
No, paramecia are not photosynthetic. Photosynthetic organisms react when exposed to light. Paramecia cannot detect light.
Yes
Photosynthetic organisms need light in order to survive. In very deep water there is no light.
Chlorophyll is the principal pigment in photosynthetic organisms that absorbs light energy for photosynthesis.
They are called phototrophs. They are photosynthetic organisms
In order to live, photosynthetic organisms cannot survive without sunlight and water. Therefore a photosynthetic organism cannot survive in any place without water, such as a desert, or without light and air, such as the moon.
By using photosynthetic pigments. Primary pigments are the chlorophylls
All photosynthetic organisms have chlorophyll or a similar pigment that captures light energy, allowing them to convert carbon dioxide and water into glucose and oxygen. They also have specialized structures, such as chloroplasts, where photosynthesis takes place. Additionally, they require sunlight to power the photosynthetic process.
Green plants (and some photosynthetic bacteria)
No, there are some photosynthetic protists and some photosynthetic bacteria.
Unicellular,filamentous and photosynthetic organisms are ALGAE
The light-sensitive pigment found in photosynthetic archaea is called bacteriorhodopsin. It is a type of retinal protein that helps these organisms convert light energy into chemical energy for photosynthesis.