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Gagan Bansal
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Asked: 2021-06-04T14:01:04+00:00 In:

Hard calcium carbonate structures are used as skeleton by

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Poll Results

66.67%(a) Echinodermata ( 2 voters )
0%(b) Protochordata
33.33%(c) Arthropoda ( 1 voter )
0%(d) Nematoda
Based On 3 Votes

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NCERT Important Questions Class 9 Science biology Chapter 7
Important NCERT Extra Questions
Chapter 7 Diversity in Living Organisms
NCERT Book Extra Questions for Session 2022-2023
CBSE Board and UP Board Others state Board

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    1 Answer

    1. (a) Echinodermata

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