Biology summary of one cephalopod, one bivalve and one chiton of your Essay

Biology summary of oneness cephalopod, one bivalve and one chiton of your choosing - Essay Exampleales use the hectocotylus (a special arm) to dispense packets of sperm (spermatophores) from the productive tracts terminal organ/ cephalopod penis, into the mantle cavity of the womanishs. In benthic octopuses, it is the troika arm on the right that serves as the hectocolylus. A few months following this mating process, the males die, and in or so octopus species, females have the conditions to keep viable sperms within their bodies until their eggs reach maturity. After fertilization of the eggs, the female lays approximately 200,000 eggs, but such numbers vary depending on the kind of species, genera, families, and the individual octopus. While turn over octopuses mainly feed on fish, other cephalopods and prawns, the bottom dwellers, on the other hand, feed mainly on clams, whelks, polychaete worms and crabs. Using paralyzing saliva, octopuses inject their prey and break down t heir bodies using their beaks. As for shelled molluscs, an octopus feeds on them by drilling a hole through their shells, inject their degrading saliva into the hole and tear the inner soft tissues (Campbell & Reece, 2005, p. 86).Octopuses backside live in various parts of the ocean such as the ocean floor, pelagic waters and on coral reefs. These organisms have a keen eye perceive (that can recognize light polarizations), a good sense of touch and statocysts that detect sound. Octopuses have no internal or external skeletons to enable them squeeze through tight spaces, are intelligent, fast and can mimic shapes of other creatures when hunting for food and are able to avoid predation due to their speed, great power to camouflage, presence of venom and expulsion of ink (Campbell & Reece, 2005, p. 90).An example of a bivalve is a scallop. Scallops belong to the acres animalia, phylum millusca, class bivalvia, order ostreoida, sub-orders pectinoida and pectinina, superfamily pecti noidea and family pectinidae. Scallops are bilaterally symmetrical with the scallop composed of two valves/ halves the