explain the difference between a protostome and a deuterostome?
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Protostomes (from the Greek: first the mouth) are a taxon of animals. Together with the deuterostomes and a few smaller phyla, they make up the Bilateria, mostly comprising animals with bilateral symmetry and three germ layers. The major distinctions between deuterostomes and protostomes are found in embryonic development. In protostome development, the first opening in development, the blastopore, becomes its mouth. In deuterostome development, the blastopore becomes the animal's anus. Protostomes have what is known as spiral cleavage which is determinate, this meaning that the fate of the cells is determined as they are formed. This is in contrast to deuterostomes which have radial cleavage that is indeterminate.\n\nDeuterostomes (taxonomic term: Deuterostomia; from the Greek: "second mouth") are a superphylum of animals. They are a subtaxon of the Bilateria branch of the subregnum Eumetazoa, and are opposed to the protostomes. Deuterostomes are distinguished by their embryonic development; in deuterostomes, the first opening (the blastopore) becomes the anus, while in protostomes it becomes the mouth.\n\nThere are three phyla of deuterostomes:\n\n    * Phylum Chordata (vertebrates and their kin)\n    * Phylum Echinodermata (starfishes, sea urchins, sea cucumbers, etc.)\n    * Phylum Hemichordata (acorn worms and possibly graptolites)\n\nThe phylum Chaetognatha (arrow worms) and the isolated genus Xenoturbella may also belong here. Extinct groups may include the phylum Vetulicolia. The term Ambulacraria is sometimes used for the phyla Echinodermata and Hemichordata, as well as Xenoturbella.\n\nIn both deuterostomes and protostomes, a zygote first develops into a hollow ball of cells, called a blastula. In deuterostomes, the early divisions occur parallel or perpendicular to the polar axis. This is called radial cleavage, and also occurs in certain protostomes, such as the lophophorates. Cleavage is indeterminate - the cells' fates are not determined early on. Thus if the first four cells are separated, each cell is capable of forming a complete small larva, and if a cell is removed from the blastula the other cells will compensate.\n\nIn deuterostomes the mesoderm forms as evaginations of the developed gut that pinch off, forming the coelom. This is called enterocoely.\n\nBoth the Hemichordata and Chordata have gill slits, and primitive fossil echinoderms also show signs of gill slits. A hollow nerve cord is found in all chordates, even tunicates (even if it disappears in the adults). Some hemichordates also have a tubular nerve cord. In early embryonic stage it looks like the hollow nerve cord of chordates. Because of the degenerated nervous system of echinoderms it is not possible to discern much about their ancestors in this matter, but based on different facts it is quite possible that all the present deuterostomes evolved from a common ancestor which had gill slits, a hollow nerve cord and a segmented body. It could have resembled the small group of Cambrian deuterostomes named Vetulicolia.
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Prokaryotic- does not have a nucleus or organelles other than ribosome. An example of this would be bacteria\n\nEukaruotic- has a nucleus and organelles.  An example would be plants and animals
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Monocots= M    vs Dicots = D\nShort and sweet!!!!!\n\nM: Stems have scattered bundles in cross-section\nM: Veins are parallel in the leaf\nM: Flower parts in 3 or multiples of three\nM: Seeds have one seed leaf in development\nM. Roots are usually longer (deeper/tap like) and less branchy\n\nD: Stems have a circular bundle arrangement in XS\nD: Veins are netted in the leaf\nD: Flower parts are in 4's and 5's or their multiples\nD: Seeds have two seed leaves in development\nD; Roots are usually more branchy and spread out.
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they can be divided into 2 \nagnatha gnathostomata\nagnatha can be further divided into class cyclostomata\ngnathostomata contains\nchondrichthyes (cartilagenous endoskelton)\nosteichthyes (boney skelton)\namphibia\nreptilia\naves\n& mammals
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Protozoa are microscopic organisms, bigger than Bacteria, they have evolved and they get food from eating Bacteria.\nWhen they get big enough they split into two exact copies and thereby reproduce and grow.
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They are different, one is general and the other is connected to the reproductive details in the DNA as per the explanation given by all the three preceding answerers. All of them are right in their own way so far as the scientific findings on the subject is concerned.
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I'm sure that there are more technical differences that entomologists use to discern between the two groups, but when a dragonfly is resting, its four wings are flat and held out to the side (i.e. parallel to the ground). Damselflies, on the other hand, fold theirs back and together over their bodies when they're resting.\n\nSize is NOT the difference.
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The over simplified answer: all the yolk is concentrated at the bottom pole (I forget if this is called 'south' or 'negative' or whatever). This isn't the only difference, but its the first obvious one during development.
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The main component of protoplasm is....  Water!  That's pretty much it.  Inside the protoplasm, you've got all sorts of stuff swimming around -- organelles, chromosomes, proteans, aminos -- but the medium it's all floating in is really just H2O.
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Both are hydrodynamic, that is, with the fusiform shape that is best to "pierce" the water when moving forward. In addition, such a shape maintains a laminar water flow around them (as opposed to turbulent). A laminar flow ensures support of the body (as opposed to sinking).\nMovement in water differs from terrestrial movement because the body may move in 3 dimensions; therefore, fish fins (comparable to the "flaps" of submarines... well I know nothing about submarine architecture so I guess that's not their name) counteract pitch (up/down tilt), yaw (left/right) and roll (rotation around the greater body axis).
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Protists:  CLICK LINK BELOW FOR NAMES AND PICTURES ! YOU SHOULD BE ABLE TO PRINT THAT PAGE.\n\nSlime molds and algae are protists.\nSometimes they are called the odds and ends kingdom because its members are so different from one another.  Protists include all microscopic organisms that are not bacteria, not animals, not plants and not fungi.\nMost protists are unicellular. You may be wondering why those protists are not classified in the Archaebacteria or Eubacteria kingdoms.\nIt is because, unlike bacteria, protists are complex cells. \n \nThese delicate looking diatoms are classified in the protist kingdom. (Click link below for names and pictures.)
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If you mean the hen's egg and not just any egg, the answer is neither.  They both evolved from more primitive forms together.
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The first thing you will see is the structure of the cells which form tissue. Inside the cell, there's nuclues which contols all the activities in the cell. Protoplasm stands for cytoplasm and nuclues(extra info).
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two distinct forms have to be different species... don't really get what you're asking but hope that helps...
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cause that word "long" is relative, tadpoles have seemingly long intestines compared to their tiny bodys, hence it's all wrapped up, and the same intestines are seemingly small compared to the frogs bigger body.
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How can you even compare the two?  They're in totally different generas!
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I don't know. Whats the difference?