MICROANATOMY

Detailed explanation-1: -The space within the inner membrane of mitochondria is called as a matrix. It possesses their own DNA, RNA and ribosomes. It shows the presence of many enzymes required for ATP production. Thus, the correct answer is option D.

Detailed explanation-2: -Mitochondria and Plastids like Chloroplast have their own DNA and ribosomes because of which they are able to synthesize some of their own proteins and replicate independent of the nucleus.

Detailed explanation-3: -The mitochondrial matrix contains the mitochondrial DNA, ribosomes, soluble enzymes, small organic molecules, nucleotide cofactors, and inorganic ions.

Detailed explanation-4: -Assertion :Mitochondria and chloroplasts have their own genome. Reason: Endoplasmic reticulum and Golgi body are the cell organelles which have their own DNA.