Why are mitochondria considered as a 'weird' organelle?

Correct option is B

Sol: The correct answer is (b) Because they contain ribosomes and DNA

• Mitochondria are considered "weird" or unusual organelles because they possess characteristics that are typically found in prokaryotic cells (like bacteria), rather than eukaryotic cells.
• Specifically, mitochondria have their own ribosomes and DNA, which is separate from the cell's nuclear DNA.

Key Points:

1. Ribosomes and DNA:
   • Mitochondria contain their own DNA in the form of a circular chromosome, similar to prokaryotes.
   • They also have their own ribosomes, which are responsible for synthesizing some of their proteins independently of the cell’s ribosomes.
2. Endosymbiotic Theory:
   • The presence of their own DNA and ribosomes supports the endosymbiotic theory, which suggests that mitochondria are descendants of ancient bacteria that were engulfed by a larger host cell.