Question

Euplectella is a
A.Shallow seawater sponge
B.Deep seawater sponge
C.Freshwater sponge
D.Terrestrial sponge

Answer 1

Euplectella aspergillum is also known as The Venus' flower basket is a glass sponge in the phylum Porifera. These built their skeletons out of silica like the other glass sponges which shows the great interest in general science that does not require heat to form the glass lattices.

Complete answer: In the deep waters of the pacific ocean, the marine sponge called Euplectella aspergillum is found. Like other sponges, they feed by filtering seawater to capture plankton. The sponges are often found to house glass sponge shrimp, usually, a breeding pair, who are typically unable to exit the sponge's lattice due to their size. Shrimps perform the mutualistic relationship with sponges until they die so that these leaves around the sponges consequently.
The body is made up of triaxon spicules that are basket, curved, and tubular. The body is perforated by numerous apertures, which are not true Ostia but simply parietal gaps. Syconoid type of canal system is present, where Ostia communicates with incurrent canals, which communicates with radial canals through prosopyles which, in turn, open into spongocoel and to outside through osculum.
Animals of these body structures are in a thin-walled, cylindrical, vase-shaped tube with an atrium that is present at the center largely. The body is composed entirely of silica in the form of 6-pointed siliceous spicules, hence, they are commonly known as glass sponges. The spicules are composed of 3 perpendicular rays giving them 6 points.
Hence, the correct option is (B) Deep seawater sponge

Note: Spicules are microscopic, pin-like structures within the sponge's tissues that provide structural support for the sponge. In the case of glass sponges, the spicules "weave" together to form a very fine mesh which gives the sponge's body a rigidity not found in other sponge species and also allows the glass sponges in the water column to survive at the greater depths.