Marine Biology Module 5 -2024 (A+solutions)

Mantle - Correct Answers A sheath of tissue surrounding the organs of a mollusk, producing the mollusk's shell and performing respiration Radula - Correct Answers An organ covered with hundreds of small teeth used for scraping food into the mouths of mollusks Chitin - Correct Answers A derivative of carbohydrates that provides both flexibility and support Open Circulatory System - Correct Answers A Circulatory System in which blood flows out of the blood vessels and into the body cavities, where it comes in direct contact with the cells Closed Circulatory System - Correct Answers A Circulatory System in which the blood always remains in vessels Molting - Correct Answers The process of shedding an exoskeleton and replacing in with a new one Cephalothorax - Correct Answers The anterior part of an arthropod body, consisting of a head and other body segments fused together Carapace - Correct Answers An armored shield that covers the anterior portion of crustaceans Water Vascular System - Correct Answers A network of water-filled canals in echinoderms, used for locomotion and feeding Ambulacral Groove - Correct Answers A channel along the oral surface of echinoderms through which the tube feet protrude Notochord - Correct Answers A flexible supportive rod that runs the length of the body of the chordates Dorsal Nerve Cord - Correct Answers A long bundle of nerve cells located along the dorsal part of an organism's body If you saw a picture of an octopus and a clam for the very first time, you would probably guess that they are very different individuals. After reading the module, in what ways can you say they are similar? - Correct Answers They both have a mantle and both also have gills for breathing and at least one siphon for handling water