Quizzes & Puzzles61 mins ago
slugs
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For more on marking an answer as the "Best Answer", please visit our FAQ.Who says every organism has to have a purpose? The only 'purpose' of an organism is to survive long enough to reproduce. Those that don't meet this criteria die out and become extinct.
As far as worms are concerned, they don't exist to aerate the soil, that is simply a by-product of their lifestyle, just as polluting the environment is a by-product of the human lifestyle. Only difference is - we have the option to change our lifestyle - other organisms don't.
It would be nice to say that slugs are a necessary part of the environment because.....but I've failed miserably, they're not. Hedgehogs eat them and as andy says so do Thrushes and Frogs but they would still be fine without these revolting beings.
A bit of useless trivia - The 23 species living in the UK are basically snails without shells (see lankeela, you were right!) A few, such as the testacella, have tiny shells. The remaining slugs belong to two groups - the roundbacks and the keeled slugs.
Although a hermaphrodite the slug rarely fertilizes itself. Mating is preceded by a long courtship ritual, particularly elaborate in the Great Grey Slug. They circle round licking each other for up to two and a half hours......I think that's as far as I can go, the rest is a bit too steamy for a Friday....
You could ask what purpose humans serve to nature.
If we went away the rest of the living things on the planet would have a much better chance of survival (as would the whole planet).
As it is we over populate, destroy rain forests, build atomic bombs, concrete over whole areas of the earth, pollute the atmosphere, have huge wars that kill each other, and cause other species to go extinct.
(I bet humans have caused more animals to go extinct than any creature on earth).
No, on the whole it would be better for the earth if humans died out and slugs survived.
I think humans wrongly assume our lives are more important than others, but if humans became extinct, I believe there would be a greater diversity of life on this planet and less destruction and from the point of view of this planet, itself a living organism, I would suggest that makes us the pointless creature in it's eyes. (If it has any)
Sorry if that sounds a bit preachy. I'll get off my soapbox now and slither away, all embarrassed.