Zoology-Mollusca Info

Zoology Lab Report Mollusca Kingdom- Animalia Phylum-Mollusca Class-Bivalvia Genus-Corbicula Habitat- * or so ar marine, but many live in brackish pee and in streams, ponds and lakes. Feeding- * Most are suspension feeders. Their respiratory currents bring both atomic number 8 and primitive materials to their gills, where cilia tr strikes postulate them to the tiny gill pores. Reproduction- * They are diecious. saturation is commonly external. Marine embryos go through three free-swimming immature stages-trochophore, veliger larva and young spat- before reaching adulthood. * In judicious water clams, fertilization is internal and some gill tubs sour fly-by-night brood chambers. Locomotion- They move by extending their muscular stem amongst the valves. They pump blood into the foot, causing it to swell and to act as an anchor in mud or sand. Then, longitudinal muscles accept to shorten the foot and pull the animal forward. Osmoregul ation: They are isosmotic. This fashion that they have the same level of osmotic obligate diffuse and the solvent flows through a semi poriferous membrane from a neighbourhood of low solute concentration to a region of high solute concentration.

Therefore, they can inhabit, adjust and sustain constancy in their new environment when migrating. Circulation: They have an open circulatory system, nub the blood does not circulate entirely deep raze vessels but is collected from the gills, pumped through the heart, and released trailly into spaces in the tissues from which it returns to the gills and then to the heart. Such a blood-filled space is get it on as a hemocoel (blood cavi ty). The hemocoel has largely replaced the! coelom, which is change magnitude to a small area around the heart and to the cavities of the variety meat of reproduction and excretion. Biological grandeur: Certain species are of direct or indirect commercial and even medical importance to human.If you want to get a full essay, order it on our website: OrderEssay.net

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