Phylum Echinodermata: Class Echinoidea
Chewing apparatus in sea urchin is named as:
Aristotle’s lantern
chemoreceptors
photoreceptors
sinus glands
Aristotle’s lantern
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Larva of sea urchin is named as:A. bipinnaria larva
B. Muller’s larva
C. planula larva
D. pluteus larva
Approximate number of species that are included in class Echinoidea is:
A. 1000
B. 4000
C. 2000
D. 5000
Members of echinoids have a large
A. arm
B. disk
C. coelom
D. foot
How many numbers of Ossicles in sea urchin:
A. 32
B. 34
C. 35
D. 56
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