SSC MTS EXAM

SSC

BIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which group to these belong to? sea star, brittle star, sea cucumber, sea urchin
A
Echinoderms
B
Sponges
C
Fish
D
Mollusks
Explanation: 

Detailed explanation-1: -Additionally, sea cucumbers, brittle stars, and sea lilies, less known animals of the ocean, round out the family tree. Together, these animals make up the Echinodermata, a word with Greek origins meaning “hedgehog skin.”

Detailed explanation-2: -The echinoderms (Greek for spiny skin) include sea stars, sea urchins, feather stars, brittle stars and sea cucumbers.

Detailed explanation-3: -Starfish and brittle star belong to the Phylum Echinodermata which consists of exclusively marine organisms. They belong to two different classes as Asteroidia and Ophiuroidea, respectively.

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