Zoology-Mollusca Info

Zoology Lab Report Mollusca Kingdom- Animalia Phylum-Mollusca Class-Bivalvia Genus-Corbicula Habitat- * more or less ar marine, but many live in brackish water supply and in streams, ponds and lakes. Feeding- * Most are suspension feeders. Their respiratory currents bring both atomic number 8 and ingrained materials to their gills, where cilia tr strikes postulate them to the tiny gill pores. Reproduction- * They are diecious. saturation is unremarkably 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 temporal brood chambers. Locomotion- They move by extending their muscular stem surrounded by 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 take on to shorten the foot and pull the anima l forward. Osmoregulation: They are isosmotic. This heart and soul that they have the same level of osmotic obligate distribute and the solvent flows through a semi poriferous tissue layer from a surface area 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, importation the blood does not circulate entirely deep complicate vessels but is collected from the gills, pumped through the heart, and released taperly into spaces in the tissues from which it returns to the gills and then to the heart. Such a blood-fi lled space is recognise as a hemocoel (bloo! d cavity). The hemocoel has largely replaced the coelom, which is fall 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 magnificence to human.If you want to get a full essay, order it on our website: OrderEssay.net

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