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Phylum - Echinodermata MCQ Question with Answer

Phylum - Echinodermata MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

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Question No : 22
Main difference between starfishes and brittle stars is in the

number of arms
structure of the ambulacral groove
tube feet
pedicellariae

Question No : 23
Animals which exhibit radial, pen-tamerous symmetry in adults, and bilateral symmetry amongst larvae, are

sea-hares
sea-stars
devil fish
sea fans

Question No : 24
Sea cucumber belongs to the class

Crinoidea
Asteroidea
Holothuroidea
Ophiuroidea

Question No : 25
In star fish which of the following has dual function of locomotion and respiration

Axial sinus
Dermal papillae
Tube feet
Tiedamann bodies

Question No : 26
In star fish the locomotary organs are

tube feet
lobopodia
cephalopodia
rhizopodia

Question No : 27
Class Holothuroidea of phylum Echinodermat a includes

Sea stars
Cake urchins
Sea lilies
Sea cucumbers

Question No : 28
Which of the following is a living fossil ?

Holothuria (sea cucumber)
Echinus (sea urchin)
Echittocardium (sand dollar)
Antedon (feather star)

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