IiMollusks

Umxholo

• Iintlobo zeemollusks
• Imilo
• Ukondla
• Indawo yokuhlala
• Imizekelo yeemollusks

I-Mollusks zizilwanyana ezingenamqolo ezibonakaliswa ngokuba nomzimba othambileyo nonyawo lwe-muscular olugqunywe nge-calcium exoskeleton okanye iqokobhe. Ngokuqhelekileyo zizilwanyana zasemanzini.

Iintlobo zeemollusks

Zintathu iindidi ezahlukeneyo okanye iintlobo zeemollusk:

• Iimpawu zesisu. Imigibe kunye ne-slugs. Malunga ne-80% yeemollusk yile klasi.
• Cephalopods. Ingwane, iskwidi kunye ne-cuttlefish. Liqela elincinci kodwa likhulu ngakumbi.
• IiVivalve. Kweli qela kukho iimbaza, iimbaza kunye neembatyisi. Uphawu lweli qelana kukuba kuphela kwezi ntlobo zintathu zingenayo i-radula. Iimbumbulu, iimbaza kunye neembatyisi. Ngabo kuphela abangenayo i-radula.

Imilo

• Inkqubo yokuphefumla. Uninzi lwee mollusks luphefumla ngee gill, nangona ezinye iintlobo ziye zaphuhlisa inkqubo yokuphefumla yemiphunga.
• Inkqubo yokwetyisa. Iimollusk zitya kwilungu elibizwa ngokuba iradula emile okolwimi. Likwabizwa ngokuba yingubo, eli lungu ligubungela ubunzima be-visceral kwaye kwezinye iintlobo lifaka ikhalsiyam carbonate ukwenza iqokobhe.
• Inkqubo yokujikeleza. Banentliziyo, i-aorta, kunye nemithambo yegazi.
• Inkqubo yokuzala. Iimollusk ziyi-oviparous, oko kukuthi, zizala ngokubeka amaqanda ngabasetyhini. Ukuziphatha kwabo kukodwa, akuqhelekanga ukubabona bengamaqela, ngaphandle kwaxa bedibana. Uninzi lweemollusk zii-hermaphrodites.

Ukondla

Uhlobo lokondla lweemollusks luyahluka ngohlobo ngalunye. Ngokubanzi, ii-mollusks zomhlaba zii-herbivores, ngelixa ii-mollusks zasemanzini zizilwanyana ezitya inyama, nangona zikwasekela ukutya kwazo kwi-plankton kunye ne-algae.

Indawo yokuhlala

Ngokunxulumene nendawo ezihlala kuyo, iimollusk zinokuhlala phantsi kwamanzi, emazantsi olwandle (zenza iipesenti ezingama-23 zazo zonke izilwanyana zaselwandle kunye namanzi acocekileyo), kodwa ziyakwazi ukuziqhelanisa nokuhlala iimitha ezingama-3 000 ngaphezulu komphakamo wolwandle emhlabeni.

Imizekelo yeemollusks