Which of the following characters are wrong for plastids?

(i) Amyloplasts store carbohydrates; aleuroplasts store oils and fats whereas the elaioplasts store proteins.

(ii) Their number varies from 1 per cell of the Chlamydomonas, a green alga to 20-40 per cell in the mesophyll.

(iii) The space limited by the inner membrane of the chloroplast is called the stroma.

(iv) The stroma of the chloroplast contain enzymes required for the synthesis of carbohydrates and proteins.

(v) It also contains small, single stranded circular DNA molecules and ribosomes (70S).