Why are plastids able to make their own proteins?

• Plastids contain their own DNA, ribosome and all the enzymes that are required for protein synthesis.

• Plastids are of different types. The diagram shows the different type of plastids:

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Out of all these, majorly proteinoplast are responsible for storing & the modification of the proteins.

• Each plastid contain plastomes, which contain 100’s of gene molecules (rNA & tNA) and proteins.