where did plants originate? from algae or fungi?
827501
Plants are believed to have evolved from green algae, as they are both photosynthetic possessing the same pigments for photosynthesis.  Fungi are actually quite dissimilar from plants as they are not photosynthetic, some are parasites and all are chemotrophic.  They also use chitin in their cell walls as opposed to cellulose.  Fungi also store energy in the form of glycogen not starch, as plants do.
854128
yeast are a type of fungus, you can read about it, hear\n\nhttp://www.yeastgenome.org/VL-what_are_yeast.html
936352
Darwinian theory can't explain which came first as one didn't evolve from the other. Plants evolved from algae and animals evolved from non-photosynthetic eukaryotes.
929775
Fungus?  Not really a plant.
511165
mosses *are* plants, but they are not seed (or flowering) plants.\nIn mosses male sex organs, called antheridia, are produced in clusters at the tips of shoots or branches on the male plants and female sex organs, the archegonia, are produced in similar fashion on female plants. Numerous motile sperm are produced by mitosis inside the brightly colored, club-shaped antheridia while a single egg develops in the base of each vase-shaped archegonium. As the sperm mature, the antheridium swells and bursts open. Drops of rain water falling into the cluster of open antheridia splash the sperm to near-by females. Beating their two whiplash flagellae, the sperm are able to move short distances in the water film that covers the plants to the open necks of the archegonia. Slimey mucilage secretions in the archegonial neck help pull the sperm downward to the egg.
641779
They were the first organisms to utilize photosynthesis, some of them still do. Blue green Algae also known as a cyanophyta is a prokaryote. They have been around for maybe three and a half billion years or a little longer.\n\nFor in depth on the Photosynthesis see\n\nhttp://en.wikipedia.org/wiki/Cyanophyta\n\n(Just in case you were wondering what a prokaryote is it is a cell that does not have a nucleus, it divides by binary fission, basically it is a bacteria. Some would argue that as too general that is why I put 'basically it is a bacteria.')
1117308
euglena are alga which use photosynthesis to produce their own  energy source, primarily, glucose.  cyanobacteria must occupy a biological host in order to survive and multiply.
367063
The sperm and egg (1n) come from the gametophyte through mitosis. After fertilization, the zygote grows into a sporophyte (2n). The sporophyte creates spores (1n) by meiosis which grows into a gametophyte (1n). It's a cycle! Hope this helps!
171982
Algae do not belong to the Kingdom Plantae because they are not considered as _real_ plants. They don't have true tissues (except for some Phaeophyta or brown algae), therefore they're considered as single eukaryotic cells that are associated forming laminas, filaments and the like. They're classified within Kingdom Protoctista (or Protista, although the definition is somewhat different).
258814
since we all evolved form one celled organisms, which started in water, then we do come from fish. the "land egg" got us out of the water.
272548
The term epiphyte refers to any plant that grows upon or attached to another living plant. The term stems from the Greek epi- (meaning 'upon') and phyton (meaning 'plant'). These plants are sometimes called "air plants" because they do not root in soil. However, there are many aquatic species of algae, including seaweeds, that are epiphytes on other aquatic plants (seaweeds or aquatic angiosperms).\n\nOf course there are also parasitic and semiparasitic plants growing on others. The best-known of this is the mistletoe.\n\nAn epiphyte uses photosynthesis for energy and (where non-aquatic) obtains moisture from the air or from dampness (rain and cloud moisture) on the surface of its host.\n\nRoots may develop primarily for attachment, and specialized structures (for example, cups and scales) used to collect or hold moisture.\n\nEpiphytes are not parasitic on their host, growing independently and deriving only physical support. A clear advantage is gained over other herbs restricted to the ground (soil) surface where light is less available in the forest and herbivores are more active. However, epiphytes may grow so thickly as to damage the supporting plant.\n\nThe best-known epiphytes include mosses, lichens, orchids, and bromeliads (such as Spanish moss of the genus Tillandsia), but epiphytes may be found in every major group of the plant kingdom. Assemblages of large epiphytes occur most abundantly in moist tropical forests, but mosses and lichens occur as epiphytes in almost any environment with trees.
398613
Actually, animals preceded plants by a long way-The oxygen first produced was made by cyanobacteria and algae, not plants.  Plants did precede animals onto land, however.  Short answer, we evolved side-by-side for a very short period of time, prior to the formation of choroplasts some billion years ago or so, and after that have evolved separately.
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.
906320
The metabolism of most living things involves creating energy or ATP from the catabolism of carbohydrates, primarily monosaccharides.   The primary source of carbohydrates in food comes from the plant kingdom.  Plants use the sun's energy to convert CO2 and H2O into carbohydrates.  So, indirectly the majority of energy produced by all living things originates from the energy of the sun.
478379
Originally classified as plants, fungi are not at all plants, because they are heterotrophs (they do not fix their own carbon through photosynthesis but use the carbon fixed by other organisms). Indeed, fungi are now thought to be more closely related to animals than to plants, and are placed together with animals in the monophyletic group of opisthokonts. However, unlike animals, fungi absorb their food rather than ingest it, and their cells have cell walls surrounding them. For these reasons, these organisms are placed in their own kingdom, Fungi.\n\nThe Fungi are a monophyletic group, meaning all varieties of fungi come from a common ancestor. Mycologists (scientists who study fungi) believe they are monophyletic because they have chitin in their cell walls and are absorbtive heterotrophs, along with other shared characteristics.
577605
Most algae are unicellular. Some Fungi are unicellular plants too. You do have other plant-like protists which are also unicellular but I'm not sure f they are classified as true plants. You can always check an encyclopedia for more details on any of these.
491626
Both being unicellular (no matter what anybody said), and generally autotrophic organisms... All protists are unicellular, and not all algae belong to Regnum Protista... Place of algae in Whittaker's 5 Regnums is not well explained, and multicellular algae belong to Regnum Plantae... If someone has better idea where to classify them they could make a career out of it...\nBut remember, most people still divide all the organisms into 2 Regnums: plants and animals...