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.
Answer 2: Sponges generate currents with the flagella on their cells and direct water through their walls and into their central cavities, filtering the water for bacteria, algae, and protozoa as they do so. They reproduce by broadcast-spawning: sending out huge numbers of sperm and eggs into the water and hoping that they meet.