Assertion Mitochondria and chloroplast are semi- autonomous organelles.
Reason They have their own genetic material which codes for their proteins.
Both Assertion and Reason are true and reason is the correct explanation of Assertion
Mitochondria and chloroplast are semi-autonomous cell organelles, which contain their own DNA and protein synthesizing machinery. They arise from pre-existing organelles and their functions are partially controlled by the nucleus of a cell and partially themselves.