mollusca Flashcards
why are animals of mollusca referred to as mollusc?
because their body is soft and slimy
second largest phylum in animal kingdom
mollusca
habitat of mollusca
aquatic (most-marine, few-fresh water dwellers)
or
terrestrial
is body of mollusca segmented
no
germinal layers in mollusca
triploblastic
coelom in mollusca
eucoelomate
symmetry in mollusca
bilaterally symmetrical except for snail
body divisions in mollusca
head
foot
visceral mass
sex of mollusca
unisexual
a few points on visceral mass in mollusca
visceral mass is covered with mantle
this mantle secretes a hard, calcerous shell
this shell may be external or internal or even absent in some cases
examples of mollusca
bivalve
snail
octopus
a few points on octopus
most clever animal among all non-chordates
can change its colour
can perform three types of locomotion - swimming, walking or creeping
