The "power house" of a cell is ………

Assertion: Mitochondria helps in photosynthesis.
Reason: Mitochondria have enzymes for dark reaction.

Which of the following statements is $NOT$ true regarding mitochondria?

What is the approximate percentage of mitochondrial $DNA$ in a typical eukaryotic cell relative to the total cellular $DNA$?

Mitochondria and chloroplasts are semi-autonomous as they possess

In the given figure of an animal cell, one organelle is marked as $A$. Select the correct identification and function of the organelle '$A$' from the given options.