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Mitochondria and chloroplast are I. semi-autonomous organelles. II. formed by the division of pre-existing organelles and they contain DNA but lack protein synthesising machinery. Which one of the following options is correct?
A
II is true but I is false.
B
I is true but II is false.
C
Both I and II are false.
D
Both I and II are correct.
Explanation
They have DNA and 70S ribosomes, so they do synthesise proteins.
Detailed Solution
Mitochondria and chloroplasts are called semi-autonomous organelles because they have their own DNA and 70S ribosomes.
They are formed by division of pre-existing organelles and can synthesise their own proteins, so statement II (lack protein-synthesising machinery) is false.
They are formed by division of pre-existing organelles and can synthesise their own proteins, so statement II (lack protein-synthesising machinery) is false.