A) Parasitism - ultra-specific relationship
B) Uricotelism - aquatic habitat
C) Excessive perspiration - xeric adaptation
D) Stream lined body - aquatic adaptation.
Correct Answer: D
Solution :
Streaming body is a secondary aquatic adaption. It is found in animals that live permanently in water but most of them are amphibious in nature. The stream lined body consists of compression of head, body and tail into a curved stream lined form.
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