Echinoids have a large coelom and coelomic fluids are__________ circulatory medium?

Echinoderms MCQs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

PPSCFPSCNTSPakistan govt jobs
Subject
Echinodermszoology-mcqs › echinoderms
Published
22 Feb 2025
Last updated
28 May 2026

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Explanation

A. Secondary B. Primary C. Tertiary D. Quaternary

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