Which of the following is unrelated to the others?

  • A
    Sea Cucumber
  • B
    Sea Star
  • C
    Sea Urchin
  • D
    Sea Squid

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Similar Questions

Column $I$Column $II$
$(A)$ Limbless reptile$(i)$ Lamprey
$(B)$ Jawless vertebrate$(ii)$ Salamander
$(C)$ Amphibian$(iii)$ Snake
$(D)$ Cartilaginous fish$(iv)$ Shark
$(E)$ Flightless bird$(v)$ Ostrich
Match items in column $I$ with those given in column $II$.

Make the correct pair:
$1. \text{ Osculum}$$p. \text{ Fasciola}$
$2. \text{ Hypostome}$$q. \text{ Ctenoplana}$
$3. \text{ Comb jellies}$$r. \text{ Spongilla}$
$4. \text{ Hook and sucker}$$s. \text{ Meandrina}$

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

The branch of science dealing with the study of birds is

Find the odd one out.

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