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Porifera

porifera

(Science: zoology) A grand division of the invertebrata, including the sponges; called also spongiae, Spongida, and spongiozoa. The principal divisions are Calcispongiae, keratosa or fibrospongiae, and silicea.

Origin: NL, fr. L. Porus pore _ ferre to bear.


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Book recommendation for exam

... nutrition, reproduction; evolution of sex; General features and life history of Paramaecium, Monocystis, Plasmodium, and Leishmania. 4. Porifera : Skeleton, canal system and reproduction. 5. Coelenterata : Polymorphism, defensive structures and their mechanism; coral reefs and their ...

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by bertstare
Sun Oct 21, 2012 2:19 pm
 
Forum: Zoology Discussion
Topic: Book recommendation for exam
Replies: 3
Views: 6474

Re: Sponges

you mean Porifera , right? Probably because they have the same cell composition as other animals.

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by JackBean
Wed Jun 15, 2011 12:55 pm
 
Forum: Ecology
Topic: Sponges
Replies: 1
Views: 1553

Re: Phyla Porifera and Cnidaria

Which form of parasitism do sponges usually engage in? Sponges are ectoparasites but I'm not aware fo a more specific description of the type of parastism they engage in. What mechanism do sponges adapt to protect itself from suspecting predators? Sponges use silicious spicules as a physical defens...

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by firechild
Tue Feb 02, 2010 1:23 am
 
Forum: Zoology Discussion
Topic: Phyla Porifera and Cnidaria
Replies: 3
Views: 13519

Phyla Porifera and Cnidaria

I wanted to know if you guys could help me out by explaining these questions to me cause I dont get a clear understanding of it from my zoology book: Which form of parasitism do sponges usually engage in? Sponges use secondary metabolites, because they can not move, when the sponge becomes threatene...

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by purplec16
Tue Feb 02, 2010 12:32 am
 
Forum: Zoology Discussion
Topic: Phyla Porifera and Cnidaria
Replies: 3
Views: 13519

Cells with flagella in kingdom animal

... or even plants (like chlorophytes). Sponges are DEFINITELY animals though, and I know choanocytes (which are a type of cell unique to the phylum Porifera) are definitely flagellated. I'm a wildlife bio major, so as far as humans go, I don't know much beyond basic anatomy/phys, but from what I ...

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by cherib
Mon Oct 05, 2009 10:16 pm
 
Forum: Cell Biology
Topic: Cells with flagella in kingdom animal
Replies: 7
Views: 11297
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