The New Encyclopædia Britannica, Volume 16Encyclopaedia Britannica, 1981 - Encyclopedias and dictionaries |
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Page 311
... Crustaceans are distinguished from the members of other arthropod classes by being generally of aquatic habit ; by breathing through either gills or the general sur- face of the body ; and by having two pairs of antenna - like ...
... Crustaceans are distinguished from the members of other arthropod classes by being generally of aquatic habit ; by breathing through either gills or the general sur- face of the body ; and by having two pairs of antenna - like ...
Page 313
... crustaceans play important ecological roles . Amphipods and mysids , for example , form a large part of the food of commercial fishes . Even more im- portant are the crustaceans adapted to graze on micro- scopic organisms such as ...
... crustaceans play important ecological roles . Amphipods and mysids , for example , form a large part of the food of commercial fishes . Even more im- portant are the crustaceans adapted to graze on micro- scopic organisms such as ...
Page 316
... crustaceans , although the eye- stalks may persist , and many small crustaceans , such as cephalocarids and mystacocarids , have no eyes . Other sense organs are formed by modifications of the hairs ( setae ) that occur on the body and ...
... crustaceans , although the eye- stalks may persist , and many small crustaceans , such as cephalocarids and mystacocarids , have no eyes . Other sense organs are formed by modifications of the hairs ( setae ) that occur on the body and ...
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