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Acorn

Acorn

1. (Science: botany) The fruit of the oak, being an oval nut growing in a woody cup or cupule.

2. A cone-shaped piece of wood on the point of the spindle above the vane, on the mast-head.

Origin: as. Aecern, fr. Aecer field, acre; akin to D. Aker acorn, Ger. Ecker, Icel. Akarn, dan. Agern, goth. Akran fruit, akrs field; orig. Fruit of the field.


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Why do you keep talking about species

... Gastrotricha Hair stomach Meiofauna Two terminal adhesive tubes about 690 Gnathostomulida Jaw orifice Jaw worms about 100 Hemichordata Half cord Acorn worms, pterobranchs Stomochord in collar, pharyngeal slits about 100 living species Kinorhyncha Motion snout Mud dragons Eleven segments, each ...

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by gamila
Mon Jun 29, 2009 5:35 pm
 
Forum: Evolution
Topic: Why do you keep talking about species
Replies: 23
Views: 46955

Balanoglossus-evlolutionary link?

... know, there is a bit of gray area between what animals show an evolutionary link to vertabrates and invertabrates. In my textbook it provides an acorn worm (entreropneusta) which is a hemichordate. Hemichordates apparently are an evolutionary link between vertabrates and invertabrates. this acorn ...

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by 123Herpatology
Sun Jul 09, 2006 7:39 am
 
Forum: Zoology Discussion
Topic: Balanoglossus-evlolutionary link?
Replies: 1
Views: 1768


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