Question

Mention two similarities and two dissimilarities between mitochondria and plastid.
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Answer 1

Answer:

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Similarities :

• Both mitochondria and plastids are double membrane bound organelles.
• Both mitochondria and plastid in their outer membrane have porin protein which makes outer layer more permeable.
• Both mitochondria and plastids have some of their own DNA for protein synthesis hence they are called as semi autonomous cell organelles.

Dissimilarities :

• Mitochondria are involved in cellular respiration whereas plastids (chloroplasts) are involved in photosynthesis. Thus, the overall chemical reactions for the processes occurring in them are different and reversed.
• Mitochondria are found in all animal and plant cells,whereas plastics are only present in plant cells.

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Answer 2

Answer:

Mitochondria and plasmids are double membrane-bound organelles.

Mitochondria and plastid in their outer membrane have porin protein which makes outer layer more permeable.

Mitochondria and plasmids have some of their own DNA for protein synthesis hence they are called as semi-autonomous cell organelles.

Differences

Difference Between Mitochondria and Plastids

Mitochondria Plastids

Found in all eukaryotic cells Found in only plant cells

Produces ATP Produces glucose and stores it as starch

The main function is cell respiration Main organelle for photosynthesis

Smaller in size Comparatively larger in size

Pigments are absent Pigments are present