Standby Agreement. An agreement between the issuer of a security and its underwriters stating that the underwriters are responsible for any unsold portion of the issue. That is, the underwriters agree to buy the remainder of a new issue if they are unable to place its entirety with investors.
A sponge has water flow in through the pores. The water contains the food and oxygen the sponge needs. Respiration. A sponge takes in water through its pores and in more advanced forms, with canals that move the water to all throughout the sponge.
Water moves through the canals, into the chambers, and out through the central canal and osculum. THE SKELETON. The skeleton of a sea sponge is made up of tiny needlelike splinters called spicules. Spicules consist of a mesh of protein called spongin.Many sea sponges can only be identified by the microscopic examination of the skeleton.Because of this, indentification from photographs can become very difficult. sea sponge's body primarily consists of spicules and spongin. Spicules are needle shaped fiberlike structures that act as the sponge's skeleton. Spongin is a protein that helps provide body support. In some instances the spongin will combine with the spicules to provied support, in other times the spongin works alone.