Executive departments congress perform their functions true or false

No this statement is incorrect.

Explanation:

The general duties are performed by the executive branch which is one and only branch to perform to all these duties. Congress which is "bicameral legislature" of the federal government of the United States of America, writes and passes and implements the laws that create the services and suitable funds (money) for them, but the executive branch must take care of them. Civil service, which includes permanent government employees, is in the executive branch.

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