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1) Classification of sponges is primarily …

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1) Classification of sponges is primarily based on the ? (A) body organization (B) body plan (C) skeleton (D) canal system 2) The respiratory pigment present in cockroach is ? (A) Haemoglobin (B) Haemocyanin (C) oxyhaemoglobin (D) None of these 3) Book lungs are respiratory organs in ? (A) Insects (B) Aarachnids (C) Molluscans (D) Echinoderms 4)Tube feet are the locomotory organs of ? (A) platyhelminthes (B) Echinodermata (C) Mollusca (D) Arthropoda
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