AP BIOLOGY

Detailed explanation-1: -Mitochondria and plastids are semi autonomous cell organelles since they possess their own DNA and ribosomes. Chloroplasts, chromoplasts and leucoplasts are types of plastids and are absent in animal cells.

Detailed explanation-2: -Mitochondria is a double membrane-bound cell organelle. It is present in all eukaryotic cells including the plant and the animal cell. It plays an important role in cellular respiration and also has its own DNA.

Detailed explanation-3: -Mitochondria and chloroplasts have their own DNA and ribosomes.

Detailed explanation-4: -In animal cells, mitochondria are the only cell organelle outside the nucleus that contains DNA, but in plants, plastids also have their own DNA.

Detailed explanation-5: -Mitochondria are found in the cells of nearly every eukaryotic organism, including plants and animals. Cells that require a lot of energy, such as muscle cells, can contain hundreds or thousands of mitochondria.