Statement $I$ : Bone marrow is the main lymphoid organ where all blood cells including lymphocytes are produced.
Statement $II$ : Both bone marrow and thymus provide micro environments for the development and maturation of T-lymphocytes.
In the light of above statements, choose the most appropriate answer from the options given below :
In humans, the bone marrow is the main lymphoid organ where all blood cells including lymphocytes are produced.
Both bone-marrow and thymus provide micro-environments for the development and maturation of $\mathrm{T}$ lymphocytes.
Options $(1)$, ($2$) and ($3$) are incorrect.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
$\begin{array}{|l|l|} \hline Column\,\,-I & Column\,\,-II \\ \hline (a)\,\,Fibula & (1)\,\,Fore\,\,limb \\ \hline (b)\,\,Pubis & (2)\,\,Face \\ \hline (c)\,\,Radius & (3)\,\,Hind\,\,limb \\ \hline (d)\,\,Lacrymal & (4)\,\,Pelvic\,\,girdle \\ \hline (e)\,\,Temporal\,\,bones & (5)\,\,Cranium \\ \hline \end{array}$