| 1. | True spongin is found only in members of the class Demospongiae.
|
| 2. | Researchers have found over 100, 000 types of spongin.
|
| 3. | Spicule density is high with little to no spongin present.
|
| 4. | More commonly, the mesohyl is stiffened by spicules, by spongin fibers or both.
|
| 5. | They are bleached and marketed; the spongin gives the sponge its softness and absorbency.
|
| 6. | Spongin gives a sponge its flexibility.
|
| 7. | Sponge skeletons consist of either spongin or calcareous and siliceous spicules with some collagen molecules interspersed.
|
| 8. | They are distinguished by a siliceous skeleton of two and four rayed spicules and contain the protein spongin.
|
| 9. | Demosponges use spongin, and in many species, silica spicules and in some species, calcium carbonate exoskeletons.
|
| 10. | Bath sponges can be defined as any sponge species possessing only spongin fibers which are springy fibres made from collagen protein.
|
मोबाइल