Q. Consider the following pairs:

1. Smallest cell - Mycoplasma
2. Organelle with circular DNA - Lysosome
3. Leucoplast which stores protein - Aleuroplast

Which of the above is/are correct?
Answer: Only 1 and 3
Notes: Mycoplasma is the smallest known living cell. Lysosomes do not contain circular DNA; mitochondria and chloroplasts do. Aleuroplast (also called proteinoplast) is a leucoplast that stores proteins. Thus, pairs 1 and 3 are correct, while pair 2 is incorrect.