Does a worm have eyes?
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Worms live in the dark .Do they have eyes? How do they react to light? Worms don't have eyes like you or I have. But they do have photoreceptors that detect light. These are mostly concentrated in the anterior end. Have participants test to see if worms can detect light from dark. (Put a sheet of paper over one end of the tray and see if the worm can find it.). Or, often the worm will crawl under the wet paper towel, which in itself indicates it is seeking a darker space. Try sprinkling dark dirt in a winding path on top of the wet towel and see what happens. The worm will follow the trail of darkness stopping where the trail stops. ( http://www.exploratorium.edu/ifi/resources/lifescienceinquiry/doesawormhave.html )
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Yes. The phylum Annelida consists of the segmented worms. It includes the Classes Polychaeta (many haired worms), Oligocheata (sparcely haired worms), and Hirudinea (leeches).
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They like bugs and worms.
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Birds feed on many foods but most birds like to feed on worms. Interestingly, different birds are equipped with different features to locate worms. An ornithologist or bird specialist at Cornell University in Ithaca, New York said some birds seek out worms by touch, some by sight and some by smell. For example, shore birds like sandpipers have very sensitive tips on their bills. They can often feel worms that they may not see. Kiwis actually have nostrils at the tips of their bills and a very good sense of smell allowing them to find earthworms and other foods. But what about the backyard favorite, the robin? It appears, as the song says, to be "bobbin' along". When the robin is searching through the grass to find dinner, all studies suggest they are doing it entirely visually, not by hearing or smell. When the robins run along the grass cocking their heads, it appears that they are listening but all of the data suggest they are just looking. What are they looking for since many of the worms are below the surface of the lawn? They look for the castings or pellets of mud on the soil surface indicating the entrance to a worm hole. In the winter it may be more difficult for the birds to find sufficient food so bird seed or bread crumbs are a welcome treat. And don't forget that the birds need water, too--in summer and in winter.
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A quick question with a quick answer: They're not blind.\n\nBut if you're still curious if they use it to navigate around... No.\n\nThey use their hypersensitive antennae to navigate, distiguish objects, detect vibrations and find their food.\n\nA cockroach with its antennae cut off will die of starvation.\n\nI do this ALLLLLLLLLLL THE TIME!!!!\n\nAND ITS FEEEEEEEEELLS SO GOOOOOOOOD!!!\n\nYucky creepy bastards!
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worms like to come to the surface when its wet , not because they are drowning, but because its moist and they find mates.  Earth worms are hermaphrodites, and they lines up with each other with lots of slime and fertiliz each other.Once they are done they go back down burrows and deposit egg sac.
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Shedding some light on Earthworms.
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You friend is wrong. Some worms continue to live as two worms if you cut them up, or the living part grows again.\n\nBut if you cut up a snake, you break its backbone. No creature survives a cut up back bone. Yes, it dies.
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Oh well, with that information it's easy to identy. \n\nThe  creature is Biplaium kewense. They are commonly known as "worm killers".  See the link below for some photos\n\nAs others have guessed it is a planarian. Worm killers are an exotic pest species imported from Viet Nam in the soil of potted plants. They are carnivorous and hunt earthworms and small insects. They immobilise their prey by coating them with that slime they secrete and then stick a tube into them and suck their insides out.\n\nBTW, well spotted that it uses it's head like a sensor. That is exactly what they do. There are pits under the head that act like a nose that enables the animal to track earthworms, slugs and other prey animals.
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Hi, \n\n  Its possible. They live in your intestine and use the nutrition that you eat to live. They can cause the symptoms that you described. She did give you the right medicine to treat you. Worms are more of an occurrence that happen to small children that play outside in the dirt and put their hands in their mouth before washing them. I think you'll be fine.
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Few mammals have eye sockets that are as well developed as our own.  It's probable that the skull you found once had eyes, but that their placement is not obvious in the defleshed skull.\n\nHere's a picture of an opossum skull\nhttp://animaldiversity.ummz.umich.edu/site/resources/anatomical_images/family_pages/didelphimorphia/didelphidae.jpg/view.html\n\nLooking at the dorsal view, you can see two horn-like projections just anterior to the sagittal crest.  Those are the attachment points for the cartilage that makes up the back of the support for the eyeballs.  In life, the eyes fit in the rounded areas just in front of those horns.\n\nHere's a picture of a skunk skull, http://www.skullsunlimited.com/graphics/spotted_skunk_skull.jpg\n\nYou can see the rounded area where the eyeball sits just in front of the jaw, above the cheekbone.  There's no real socket for the eyes the way there is in a human skull.
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The eye of the beholder.
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Planaria are very sensitive to light. They feed in darkness. If they stay in light too much it overloads their simple sensory system and they can't function very well.
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Ringworm is, in fact, not a worm.  It's a fungus.  People in days past mistook the shape of the infection for a worms burrow under the skin and the name stuck.\n\nHookworm is the parasite famous for digging a microscopic hole through the skin of the feet.  There are certainly others.\n\nMosquitoes also bore holes in the feet of course...
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Fishes have eyeballs, two of them in their optic capsules, just like all other vertebrates. They're surrounded partly by bone, and partly by an elastic but resistant capsule. \nBony fishes don't have eyelids, but sharks and rays do\n(see answer at \nhttp://answers.yahoo.com/question/index;_ylt=AqPoH8mhQReCU_CYDM1Fvirsy6IX?qid=1006030500996 )\n\nAnd they _do_ have nostrils, but, as you have rightly deducted, they're not used for breathing. \nIf you look at a bony fish (a goldfish or whatever you have at hand) you'll see that it has TWO nostrils on each side of its snout (they can be close together or really distant). Between these two nostrils of each side there is a tube with special olfactory (smelling) cells, like the ones we have in our own noses. The water with chemical "smell/flavor" molecules goes in through the anterior opening, and flows out through the posterior opening. Thus, fish nostrils (derived from the primitive pair of olfactory capsules) are used for smell/flavor perception, and not for breathing (which occurs at the gills). \nIt's only in tetrapods (from amphibians to reptiles, birds and mammals) that the connection between the nostrils and the respiratory system occurs (and the lungs appear). If you open a frog's mouth (please only try it with a dead animal!) you'll see two paired holes in the roof of its mouth. Those are the internal nostrils (called "choanae") and they allow passage of breathing air to the mouth--> pharynx--> lungs. \n\nAdditional trivia:\n- Our own internal nostrils open way back in our pharynx, because we have a secondary palate.\n- Cartilaginous fishes have only one nostril on each side of the snout. However, each nostril is partly separated into 2 parts by a flap of skin, and actually water flows through the nostril just as in bony fishes.\n- Some bony fishes, the cichlids (discus, Jack Dempsey), have only one nostril on each side of the snout.
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Fly eyes work like fantastic motion dectectors. Their sight system is completely different for a very different reason. Detecting motion not specific visual acuity
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yes, they do! but they see two objects not just one!\n\nps: i'm not cross-eyed.