the photosynthesis of marine plants
Plants are found only in the sunlit zone where there is enough light for photosynthesis, however, animals are found at all depths of the oceans though their numbers are greater near the surface where food is plentiful. Still, over 90 percent of all species dwell on the ocean bottom where a single rock can be home to over ten major groups such as corals, mollusks and sponges.
The processes of photosynthesis in algae and higher plants are ..
Chlorophylls absorb blue and red light and carotenoids absorb blue-green light , but green and yellow light are not effectively absorbed by photosynthetic pigments in plants; therefore, light of these colors is either reflected by leaves or passes through the leaves.
Photosynthesis is the ability of plants toabsorb the energy of light, and convert it intoenergy for the plant. To do this, plants havepigment molecules which absorb the energy of lightvery well. The pigment responsible for mostlight-harvesting by plants is chlorophyll, a greenpigment. The green color indicates that it isabsorbing all the non-green light-- the blues(~425-450 nm), the reds and yellows (600-700 nm). Red and yellow light is longer wavelength, lowerenergy light, while the blue light is higherenergy. In between the two is green light(~500-550 nm). It seems strange that plantswould harvest the lower energy red light insteadof the higher energy green light, unless youconsider that, like all life, plants first evolvedin the ocean. Sea water quickly absorbs thehigh-energy blue and green light, so that only thelower energy, longer wavelength red light canpenetrate into the ocean. Since early plants andstill most plant-life today, lived in the ocean,optimizing their pigments to absorb the reds andyellows that were present in ocean water was mosteffective. While the ability to capture thehighest energy blue light was retained, theinability to harvest green light appears to be aconsequence of the need to be able to absorb thelower energy of red light.
How does photosynthesis work underwater
It should be emphasized that plants respire just like any other higher organism, and that during the day this respiration is masked by a higher rate of photosynthesis.
Researchers find photosynthesis deep within ocean - …
They use this energy to convert water and carbon dioxide into carbohydrates and oxygen:
H2O + CO2 + sunlight --pigments--> CH2O + O2
Scientists have identified about 30 different kinds of photosynthetic pigments in marine phytoplankton.
Researchers find photosynthesis deep within ocean
All living organisms need food. The basic difference between plants and animals is that plants make their own food, while animals obtain food from their environment. Through photosynthesis, plants manufacture organic materials (food) from inorganic materials (water, carbon dioxide, and nutrients) using sunlight as their source of energy. Because plants make their own food, they are called producers. Animals are known as consumers. They gather and consume organic material rather than making it themselves. Herbivores are animals that eat plants; carnivores are animals that eat meat. Omnivores are animals that eat both plants and other animals. Scavengers eat all the leftovers and other dead organisms. No matter what an animal eats, all of its food can be traced back to the ability of plants to produce organic materials from the sun.
Photosynthesis and chemosynthesis are both ..
Photosynthesis is the biochemical process in which energy from sunlight is converted by plants, algae, and some bacteria into sugars, which are used by the organism as food. That is, these organisms convert the energy of the sun into a different form of energy.
when humans first observed a vent on the deep ocean floor ..
There are two general types of plants found in the ocean, those having roots that are attached to the ocean bottom and those not having roots which simply drift about with the water. The rooted plants in the ocean are only found in shallow water because there is not enough sunlight to sustain photosynthesis in deeper waters. Since sunlight does not penetrate more than a few hundred feet into the ocean, most of the ocean is not capable of supporting rooted plants. Nevertheless, plants are found throughout most of the oceanic surface waters.