Discussion
A feature common to nucleus, chloroplast and mitochondria is the presence of
Answer: C
The common feature is the presence of nucleic acid.
The nucleus holds the cell's chromosomal DNA, and both chloroplasts and mitochondria contain their own circular DNA and ribosomes, a sign of their origin from free-living bacteria (the endosymbiont theory). All three also contain RNA.
Lamellae (thylakoids) are found only in chloroplasts, cristae only in mitochondria, and the nucleolus only in the nucleus, so none of them is common to all three.
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