Question
Growth of an organ is defined as
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| Column $-I$ | Column $-II$ |
| $(A)$ Ketone | $(p)$ has $5$ carbon sugar, a phospphate group and a nitrogenous base |
| $(B)$ Fatty acid | $(q)$ has long chain of carbon and hydrogen atoms and a carboxyl group at one end |
| $(C)$ Aldehyde | $(r)$ has a carbonyl group at the end of the carbon chain |
| $(D)$ Nucleotide | $(s)$ has a carbonyl group within the carbon chain |