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Select the incorrect statement.

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Trachea are present but antennae are absent in Arachnids.

Mandibles are present, but Malpighian tubules are absent in crustacea.

Haemocyanin is present in some arachnids but gills are absent.

Biramous appendages are present but carapace is absent in crustaceans.

answer is D.

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Detailed Solution

Both biramous appendages and carapace is present in Crustacea.

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