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Jellyfish

Jellyfish

(Science: zoology) Any one of the acalephs, especially. One of the larger species, having a jellylike appearance. See medusa.


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Re: siphonophores

I started reading about jellyfish this morning, and just couldn't stop. Then I discovered the term siphonophora and immediately had a ton of questions. What I don't understand is how the parts are considered "individuals" if ...

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by MeganRieff
Tue Mar 04, 2014 1:25 pm
 
Forum: Zoology Discussion
Topic: siphonophores
Replies: 2
Views: 2084

siphonophores

Hi everyone, I'm Julia, a physicist/biochemist. I love all science! So bluebottles, or Portuguese men o' war, are not jellyfish but are colonies of zooids: polyps and medusae, So, this is really weird and awesome (like lots of biology!). I have some questions: 1. There are four different ...

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by Waylah
Mon Sep 02, 2013 8:23 am
 
Forum: Zoology Discussion
Topic: siphonophores
Replies: 2
Views: 2084

Hermaphrodite Reproduction

... an individual who could (theoretically/hypothetically, of course) impregnate themselves. Would asexual be correct, in the same way that certain jellyfish are asexual? Or is there another classification for this situation? Thank you!

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by cbridges
Sun Dec 16, 2012 6:24 pm
 
Forum: Human Biology
Topic: Hermaphrodite Reproduction
Replies: 0
Views: 2442

Evolution of the Face and Head

Imagine a very simple creature: Something with a blind gut (one opening is mouth and anus), like a jellyfish. After the evolution of a true gut, with mouth and anus, animals gain a front and rear end (movement now is not random, but mouth-first). The most usefull and logical ...

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by stauffie
Mon May 07, 2012 12:42 am
 
Forum: Evolution
Topic: Evolution of the Face and Head
Replies: 4
Views: 3880

How did collective animals evolve genetically?

A number of animals such as ants, jellyfish, sponges, slime mold slugs and even we humans are multicellular colonies or live as social groups. Is that explained through genetic evolution? How?

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by charles brough
Mon Oct 03, 2011 2:25 pm
 
Forum: Evolution
Topic: How did collective animals evolve genetically?
Replies: 8
Views: 5789
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