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Class Crustacca have following features....

Class Crustacca have following features.

A

cephalothorax , book lungs, chitinous exoskeleton

B

head and thorax, biramous appendages, book lungs

C

head and thorax , book lungs , chitinous exoskeleton

D

cephalothorax, biramous appendages , gills

Text Solution

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The correct Answer is:
D
Crustaceans are mostly marine but a few live in freshwater or moist places. Body consists of cephalothorax and abdomen. Each body segment bears a pair of biramous appendages . Respiration occurs through body surface or gills. Excretion occurs through green glands. They bear two pairs of antennae.
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