Dictionary » E » Earthworm



1. (Science: zoology) Any worm of the genus lumbricus and allied genera, found in damp soil. One of the largest and most abundant species in Europe and America is L. Terrestris; many others are known; called also angleworm and dewworm.

2. A mean, sordid person; a niggard.

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Action potentials of an earthworm going negative first

Ok so for a bit of a background, I am doing a science project looking at the action potentials of the earthworm. I anaesthatized the worms then hooked them up to a spiker box (http://backyardbrains.com/products/spikerbox) and stimulated them. This is an average result: http://i.stack.imgur.com/ezIEN.gif ...

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by IsDolan
Mon Jan 20, 2014 3:28 am
Forum: General Discussion
Topic: Action potentials of an earthworm going negative first
Replies: 2
Views: 1592

some clues from animal kingdom

... of a chemical produced by the females, bonellin. Some species, however, have no sex-determination system. Hermaphrodites include the common earthworm and certain species of snails. A few species of fish, reptiles, and insects reproduce by parthenogenesis and are female altogether. There ...

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by surgeongirl
Wed Sep 11, 2013 6:44 pm
Forum: Evolution
Topic: Gender divison in two opposites is greatest mistake of manki
Replies: 27
Views: 36168

Do We Have The Freedom Of Choice?

... impulse is purely electrochemical or physical. Now take a handful of neurons and you have a basic level nervous system - something similar that an earthworm has. Does it have free will? And if so, when the free will emerged? After joining two neurons? Or a thousand? No - all the neurons work under ...

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by biohazard
Wed Apr 03, 2013 9:44 am
Forum: Cell Biology
Topic: Do We Have The Freedom Of Choice?
Replies: 27
Views: 38064

Book recommendation for exam

... in relation to man. 8. Annelida : Coelom and metamerism; modes of life in polychaetes; general features and life history of nereis (Neanthes), earthworm (Pheretima) and leach (Hirudinaria). 9. Arthropoda : Larval forms and parasitism in Crustacea; vision and respiration in arthropods (prawn, ...

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by bertstare
Sun Oct 21, 2012 2:19 pm
Forum: Zoology Discussion
Topic: Book recommendation for exam
Replies: 3
Views: 8495

Grasshopper energy and oxygen needs

Grasshoppers hve ineffective open circulatory system if matched to earthworm but grasshopper is much more active, oxygen and energy needs r greater 4 more active animal, how is this able to happen? ^ I tried looking in my text for this answer, but not able ...

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by Ayeshaa
Mon May 28, 2012 1:00 am
Forum: Ecology
Topic: Grasshopper energy and oxygen needs
Replies: 1
Views: 2474
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