What is the structure of sycon?
What is the importance of osculum?
Answers
Answer:
Structure of sponges: sycon
The body is divided into two layer, outer dermal layer also called pinacoderm and inner gastral layer also called choanoderm. In between these two layers is present mesenchyme. Now, the outer dermal layer can be further classified into two main parts called potocyte and pinacocytes.
The body is divided into two layer, outer dermal layer also called pinacoderm and inner gastral layer also called choanoderm. In between these two layers is present mesenchyme. Now, the outer dermal layer can be further classified into two main parts called potocyte and pinacocytes.
The osculum (plural "oscula") 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. Wastes diffuse into the water and the water is pumped through the osculum carrying away with it the sponge's wastes.