How are green algae different from cyanobacterial?
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Cyanobacteria can use sunlight or organic materials to survive, while algae must have sunlight.
1063654
The count is difficult, since you don't say what do you mean by plants. Not joking.\nIn botany fungi aren't plants, nor mosses, neither algae.\nThe term plant is scientifically restricted to eucariontic life forms that process their own food from sun light, CO2 and water, live on land (mainly), but WITH  a VASCULAR SYSTEM well developed.\nso, please narrow your question, or expand it, anyway a pleasure to discuss this topics, TKS!
1062685
They think it was algae.
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It depends on the kind of algae.  One must remember that kelp is a type of algae and some species of brown kelp can grow on the order of meters per day.  Some kelp species will grow centimeters per day and some algal species may only grow millimeters per day.  Growth is specific to species and many organisms are considered algae.
65109
Most oxygen doesn't come from plants at all--it comes from cyanobacteria.
1091987
Thallophyta? How old are are you? The taxon thallophyta was finally abandonded over 20 years ago, and even then it had no real meaning.\n\nThallophyta is an extremely archaic term for all the non-green 'plants'. It encompassed most algae as well as bacteria and fungi. It was introduced almost 200 eyars ago ata  time when people had no idea what fungi and bacteria were and only a vague idea of what algae were. \n\nQuite simply Thallophyta isn't a real divsiion, it's was a term mad up to throw in all the things that didn't fit anywhere else. As such it includes (some) bacteria simply because 150 years ago botanists didn't know where they fit in the picture.\n\nI'm suprised that anyone under the age of 40 has ever even heard  the term Thallophyta, and amazed that anyone under 60 still uses it.
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algae is not a plant.  Algae is actually  a colony of oragnized cells working in unison.  That's why it's so easy to take apart.  It produces chlorophyl and photosynthesizes, but is not a plant.  Algae is typically aquatic and reproduces by budding or by spores.
339049
Chlorophyll is a green pigment and this gives the color to the grass and other plants.
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Broad definition of "plant" as any photosynthetic marine organism:\n\n1)phytoplankton--unicellular photosynthetic plankton in the photic zone(upper part of ocean where light can reach): diatoms, dinoflagellates, coccolithophores, cyanobacteria(used to be called blue-green algae).\n\n2) seaweed--\nhttp://www.seaweed.ie/\nSeaweeds are marine algae: saltwater-dwelling, simple organisms that fall into the rather outdated general category of "plants". Most of them are the green (1200 species), brown (2200 species) or red (6500 species) kinds shown on this page, and most are attached by holdfasts, which just have an anchorage function. Two major groups of seaweeds are wracks (brown algae order Fucales) and kelps (brown algae order Laminariales ).  Seaweeds live in rocky intertidal zones in most oceans and in temperate and polar regions they may dominate rocky surfaces in the shallow subtidal. Some may be found to depths of 250 m.\n\nAlso, mangroves and seagrasses if you count some very specialized shallow-dwelling coastal marine plants.
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cyanobacteria, unchanged for 4 billion years!\n\nhorseshoe crab, the same for 500 million years!
11031
Because chlorophyll is green.
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Chlorophyll only absorbs specific wavelengths of light. All other light is reflected. The reflected light is what allows us to perceive leaves as being green.
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Corals: kingdom Animalia\nAlgae: not well classified, some are classified in kingdom Protista some in kingdom Plantae\nBlue-green algae: kingdom Monera\nCandida: kingdom Fungi\nRose (if you mean the flower): Kingdom Plantae
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Things have unique color because they reflect and absorb light frequencies differently.  Green chlorophyll absorbs all of the other component colors of the visible spectrum and only reflects green light; therefore, we say 'it's green.'\n\nYou might still ask, "...but why?" and the answer would probably be one that describes the atomic/molecular components of chlorophyll and their their particular physiologic properties.\n\n(((( r u randy? ))))\n.
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Now Foods Chlorella is a green single-celled micro algae that contains the highest concentrations of chlorophyll known to man (60 mg/serving). Chlorella supplies high levels of Beta-Carotene, Vitamin B-12, Iron, RNA and DNA, and protein. The cell wall in this high quality Chlorella has been broken down mechanically to aid digestibility.
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living? the cell. however, some organelles encode their own genetic info (dna/rna) such as the chloroplast and mitochondria. Remarkably, chloroplasts in some algae species are able to be taken up by animals (eg: sea slugs) and still function... a testament to the complexity in organelle regulation. Phycologists r actively researching this topic. But to date, they have not yet been able to keep a chloroplast functioning outside of a biotic system. Whether this counts as alive or not, is somewhat subjective.\n\nWhether viruses r alive is another much debated question (viruses being much smaller than cells). The majority consider them not alive, cause they can't reproduce on their own. I guess if u apply that logic to the case for the chloroplast, then chloroplasts shouldn't be considered alive \n\n(the chloroplast dna can't be passed on from adult slug to baby slug... it has to be taken up [eaten] every generation)\n\nin conclusion... i'd say the cell.
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plants hold special bodies called chloroplasts, and within these chloroplasts there are chlorophyll, which absorb all the colours in the spectrum, apart from the colour green, which is why they look green - because the chlorophyll do not absorb green light