कोरल रीफ (प्रवाल भित्ति) का – McqOptions

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1.	कोरल रीफ (प्रवाल भित्ति) का निर्माण किसके द्वारा होता है?
A.	आर्थोपोडा
B.	पोरीफेरा
C.	प्रोटोजोआ
D.	सिलेण्ट्रेटा
Answer» E.

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