Which organelle of cell has its own DNA and Ribosomes?

The correct answer is Option (4)-Mitechondica

The organelle of a cell that has its own DNA and ribosomes is the mitochondrion (plural: mitochondria).

Mitochondria:

• DNA: Mitochondria have their own genetic material, known as mitochondrial DNA (mtDNA). This DNA is separate from the nuclear DNA found in the cell's nucleus.
• Ribosomes: Mitochondria also have their own ribosomes, which are smaller than the ribosomes found in the cytoplasm. These mitochondrial ribosomes are essential for protein synthesis within the mitochondria.

Mitochondria are often referred to as the "powerhouses" of the cell because they play a crucial role in cellular respiration, producing adenosine triphosphate (ATP) – the main energy currency of the cell. The presence of their own DNA and ribosomes suggests that mitochondria have a semi-autonomous origin, and it is believed that they originated through an ancient symbiotic relationship between ancestral eukaryotic cells and bacteria.