Phylum $Mollusca$ is distinguished from Phylum $Arthropoda$ by which of the following features?

  • A
    Organ-system level of organization.
  • B
    Coelomate and bilaterally symmetrical.
  • C
    Triploblastic.
  • D
    Unsegmented body.

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Similar Questions

Match the following columns and select the correct option.
Column-$I$ Column-$II$
$(a.)$ Sea fan $(i)$ Mandarina
$(b.)$ Sea hare $(ii)$ Taenia
$(c.)$ Radial symmetry $(iii)$ Gorgonia
$(d.)$ Endoparasite $(iv)$ Aplysia

Which of the following pairs is incorrectly matched?

Consider the following set of animals and choose the best option for the set of animals not belonging to the same class:

Match the following:
$(a)$ Operculum$(i)$ Ctenophora
$(b)$ Parapodia$(ii)$ Mollusca
$(c)$ Scales$(iii)$ Porifera
$(d)$ Comb plates$(iv)$ Reptilia
$(e)$ Radula$(v)$ Annelida
$(f)$ Hairs$(vi)$ Cyclostomata and Chondrichthyes
$(g)$ Choanocytes$(vii)$ Mammalia
$(h)$ Gill slits$(viii)$ Osteichthyes

Which of the following pairs is correctly matched?

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