The orange colour of carrot root is due to the presence of
Which of the following option correctly match $A, B, C,$ and $D$ indicated in the given sectional view of chloroplasts.
$A$ : Chloroplast is a semi-autonomous organelle.
$R$ : The ribosomes of the chloroplast are smaller than cytoplasmic ribosomes.
Extranuclear $DNA$ is found in
Which of the following plastid is coloured and contains carotenoids?