Failed to connect to MySQL: Access denied for user 'examnext_online'@'localhost' (using password: YES) Which of the following statement is true - Sarthaks eConnect
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Practice Online Test Series for JEE Main 2018 & NEET 2018

Which of the following statement is true:

Which of the following statement is true:

A.

Amphibians and reptiles have a 3-chambered heart

B.

In amphibians incomplete double circulation is present

C.

In birds and mammals complete double circulation is present

D.

All statement are true
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