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Usually they are parasites, damaging or destroying their hosts and giving nothing in return, but some set up real partnership housekeeping with their hosts so that both are better off." "You mean a symbiotic relationship," Jack said. "Of course," Dal said. "Now suppose these virus-creatures were intelligent, and came from some other place looking for a new host they could live with.
The only apparent exception to this is in case of legume crops, such as clover, alfalfa, peas, beans, and vetch, which have power to utilize the free nitrogen by means of their symbiotic relationship with certain nitrogen-fixing bacteria which live, or may live, in tubercles on their roots.
"Reproduction, mainly. All the other gut-living plants have to enter the host and establish themselves as outsiders, permitted to remain as long as they are useful. The green-fly and its yeast plant have a permanent symbiotic relationship that is essential to the existence of both. The plant spores appear in many places throughout the fly's body but they are always in the germ cells.
It is true many socialists have given to this latter law an excessive and exclusive importance, just as some individuals have entirely neglected it. When species thus mutually aid each other to live they are called by naturalists symbiotic species, and instead of the struggle for life we have co-operation for life.
Before school had started it was as if Gabriele and Nathaniel were completely alone except for the clients. It was as if in her remote choice for a home she had the idea that she could plant a society like a garden, water it nicely, and extirpate it of weedy or symbiotic associations.
The thing is just too complex to have developed since mankind has been on this planet. The magter must have caught the symbiotic infection eating some Disan animal. The symbiote lived and flourished in its new environment, well protected by a bony skull in a long-lived host.
Someone is thinking at last and not just punching bloody numbers into a machine and sitting and scratching his behind while waiting for the screen to light up with the answers. Do you know how Disans exist?" Brion shook his head. "The fools here think it disgusting but I call it fascinating. They have found ways to join a symbiotic relationship with the life forms on this planet.
Their body temperatures are around a hundred and thirty degrees. They have specialized tissue in the gluteal area for storing water. These are minor changes, compared to the major ones they have done in fitting themselves for this planet. I don't know the exact details, but the reports are very enthusiastic about symbiotic relationships.
It used, in a way, the principle of those lateral wells which in dry climates gather water too scarce to collect in merely vertical holes. They went on and on, admiring and amazed. All about them were curiosities of adaptation, freaks of ecological adjustment, marvels of symbiotic cooperation. A botanist would have swooned with joy at the material all about. A biologist would have babbled happily.
They wouldn't look for an intelligent creature, they would look for some unintelligent creature with a good strong body that would be capable of doing all sorts of things if it only had an intelligence to guide it. Suppose these virus-creatures found a simple-minded, unintelligent race on this planet and tried to set up a symbiotic relationship with it.
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