do earthworms respond to light?
474255
SInce the earthworm's environment is always wet or humid, it always contains some amount of water for the earthworms, so therefore, it is cool, but if a person was to dig up an earthworm, they would not adapt to the full heat, and try to dig back in again, to their original habitat. Oh yea, and if you do ever find an earthworm in your garden or so, the soil is good for you to plant, and the plants won't die unless you don't give them water. lol
751967
Oh, yes.  Many insects can perceive ultraviolet light; and birds have 4 photoreceptor cells in their eyes (we only have 3) so they can also see some ultraviolet.\n\nThe rumors that animals can only see in black and white is wrong, by the way.  Most mammals have only 2 color receptors so they see things less colorfully than we do -- it seems evolution determined that early mammals, being nocturnal animals, did not need all 4 photoreceptors their ancestors did, and lot them.  Very recently -- in evolutionary terms, that means just a few tens of million of years -- the monkey/ape reacquired some of the color sensitivity by having one of the color cell type mutate and differentiate, so we now have 3; but in some cases, the DNA is not foolproof, hence we have color blindness.\n\nThere was an article about this topic in the July 2006 issue of Scientific American, a bit of this is available on the attached link.
61373
There is a green respiratory pigments called chlorocruorin, which is green in dilute concentrations, and red in high concentrations. \nHowever, this pigment occurs mostly in annelids (earthworms and their relatives). \nThe greenish fluids in "bugs" (I'm assuming you mean arthropods)could come from defense glands or similar structures, or it could be their gut content in case they were crushed.\nThey have other respiratory pigments, and most are red-violet-bluish in color. Insects don't have pigments.
1178022
Earthworms travel underground by the means of waves of muscular contractions which alternately shorten and lengthen the body. The shortened part is anchored to the surrounding soil by tiny claw-like bristles (setae) set along its segmented length. (Typically, earthworms have four pairs of setae for each segment but some genera are perichaetine, having a large number of setae on each segment.) The whole process is aided by the secretion of a slimy lubricating mucus
655580
no, it is infared light, which is lower energy than regular light. plus it is a very weak, un focused siganl that only transmits for an instant.
399230
Not all lizards anyway.\n\nThe nocturnal helmeted gecko has become the first vertebrate known to see colours in the dark\nTHE nocturnal helmeted gecko has become the first vertebrate known to see colours in the dark. \n\nMost creatures, including humans, have eyes that contain two types of light-sensitive cells. In daylight, animals rely mainly on colour-sensing cones that distinguish between light of different wavelengths. At night, when photons are scarce, they rely exclusively on more sensitive rod cells, which are colour-blind. \n\nThe only exception to this rule, and the only animal known to see colours at night, was thought to be the elephant hawkmoth (Deilephila elpenor). It has adaptations, which include different facets of its compound eye, to increase the light captured by its cone cells in the dark (New Scientist, 2 November 2002, p 23).
1013114
Not all living things need sunlight, ie the fish and worms that live at the very depths of the ocean where light rays cannot pennetrate.
598831
Earthworms are hermaphrodites.  Other types of worms look different; females tending to be larger than males, for one thing.
895970
EARTHWORMS.  THEY FEED ON DECAYING PLANTS, DIGEST IT AND FERTILIZE THE SOIL WITH THEIR EXCREMENT.  ALSO, THE ":SLIME" THEY SECRETE ALSO KEEPS THE SOIL MOIST.
867604
People arent really sure if mosquitoes are attracted to light but one source says mosquitoes actually veer away from the light source at the last minute. To the mosquitoe, the area just outside of the light appears darker. Moths, being nocturnal, head towards the dark patch, which is always just around the light. Confusing aint it?
508640
Locomotion.  The setae on each segment allow the earthworm to "grip" the earth while their longitutinal and circular muscles contract the rest of the body into place to apply forward pressure to "burrow" through the earth.
728342
Different animals see different ranges of color.  Scientists can determine this largely by looking at the structure of the eye, to understand what light waves a structure responds to.
610952
Birds hear a lot better than we do, and worms moving around in soil make noise that is distinctive. OR, maybe they have Xray vision! :-)
1155639
photons release energy into the semiconductor and can raise the fermi levels, however, depending on the semiconductor material being used not all light has the energy required to raise the levels enough to allow reverse current. So in a sense they are all photo sensitive, but only to a certain degree depending on the material
334962
Depends on the lighting. Some fish are blind in underground caves and do not see at all. The majority are very aware of their surroundings both with sight and chemical/electrical sensitivity. Sound has an effect with communication. Sight is but one mode of sight seeing. Deep sea creatures are capable of producing artificial light but I do not feel that there is nothing artificial about it. Seeing well is a matter of survival.
700451
Different photoreceptors respond more or less strongly to different wavelengths (colours) of light. Digital cameras use more than one type of photodector for each pixel of the picture. By comparing the strengths of the signals from different detectors you can tell what colour the pixel should be.\n\nFilm cameras do the same thing, but use different chemicals in the film instead of photodectors. The different chemicals respond to different wavelengths of light.
1060069
Earthworms breathe through their skin.  When they are in a moist hole their skin has no trouble taking the oxygen out of the moist tunnel air.  When it rains the tunnels fill with water. This water has very little dissolved oxygen in it since it has no contact with the surface.  So the worms begin to choke (so to speak).  They then move to the surface where the water comes in contact with the air to replenish the oxygen they took out of it.  They die when they remain on the surface too long and dry out.