How are the following related to each other?
$(a)$ Chromatin network and chromosomes.
$(b)$ Chloroplast and chlorophyll.
$(c)$ Genes and $DNA$.

(N/A) The cell contains nuclear material which appears as an entangled mass of thread-like structures called chromatin when the cell is not dividing. During cell division,this chromatin material condenses and organizes into distinct rod-like structures known as chromosomes.
$(b)$ Chloroplasts are specialized green-colored plastids found in plant cells. They contain a green pigment called chlorophyll,which is essential for capturing light energy during photosynthesis.
$(c)$ Genes are the functional segments of $DNA$ molecules. They are located on the $DNA$ strands and act as the hereditary units that control specific traits by coding for the synthesis of specific proteins.