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.
1 Sponges are filter feeders, who absorb nutrients as well as oxygen from the water, that enters its body through the pores. 2  Usually, they feed on bacteria and food particles present in the water; but, some species have a symbiotic relation with certain microorganisms. So, sponges are made of these specialized cells, and they do not have any head, trunk, bodily organs, or appendages. 2  They are simple multicellular organisms. 3  Sponges are filter feeders, who absorb nutrients as well as oxygen from the water, that enters its body through the pores.