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Given below are two statements :
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 :
Both Statement $I$ and Statement $II$ are incorrect.
Statement $I$ is correct but Statement $II$ is incorrect.
Statement $I$ is incorrect but Statement $II$ is correct.
Both Statement $I$ and Statement $II$ are correct.
Solution
The correct answer is option no. ($4$) as both statements $I$ and $II$ are correct.
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.
