Question

Give a comparative account of mitochondria and plastids.

Answer 1

1. Mitochondria is known as power house of the cell whereas the Plastids are known as the kitchen of the cell. 
2. Mitochondria produces energy in the form of ATP whereas Plastids manufacture food i.e., photosynthesis.

• Plastids occur only in plant and algae cells, but mitochondria are found in all eukaryotic cells.

• Mitochondria are smaller than chloroplasts: Mitochondrion is about 1μm in diameter and up to 5μm in length, whereas, chloroplast is 4-6 μm in diameter.

• Main function of mitochondria is the cell respiration, but plastids involve in many functions such as production of sugar and temporarily store them as starch, storage of starch and lipids.

• Number of mitochondria per cell is greater than that of the number of chloroplasts. That is mitochondria per cell are usually 100-10,000, whereas chloroplasts per plant cell are about 50.

• Both can produce their own copies by division.

mitochondria and plastics are they both are bounded with double membrane and they have there own gagnetic material.

They have their own dna and ribosomes.
They have a double membrane.