Porifera

2. - attached directly by its base without a stalk or peduncle
5. - a slender pointed usually hard body especially : one of the minute calcareous or siliceous bodies that support the tissue of various invertebrates
8. - in the body of invertebrates including echinoderms, molluscs, tunicates, sponges and some chelicerates.
9. - genus of marine sponges of the class Calcarea (calcareous sponges), characterized by a fingerlike body shape known as the syconoid type of structure. ... Water is driven through the sponge by the beating of many hairlike cilia lining the central cavity.
10. (singular ostium) - Any of the small openings or pores in a sponge, through which water is drawn in.
12. - a tough-coated dormant cluster of embryonic cells produced by a freshwater sponge for development in more favorable conditions.
14. - a modified type of collagen protein, forms the fibrous skeleton of most organisms among the phylum Porifera, the sponges.

1. - is an excretory structure in the living sponge, a large opening to the outside through which the current of water exits after passing through the spongocoel.
3. (Pinacocyte) - the outer layer of tissue in a plant, except where it is replaced by periderm.
4. - a type of sponge having an oval shape and a thin body wall with pores leading directly into the spongocoel.
6. - are tubular cells which make up the pores of a sponge known as ostia.
7. - cells that line the interior of asconoid, syconoid and leuconoid body type sponges that contain a central flagellum, or cilium, surrounded by a collar of microvilli which are connected by a thin membrane
11. - a sponge of the most complex structure, composed of a mass of flagellated chambers and water canals.
13. (Mesenchyme) - is the gelatinous matrix within a sponge