$A$ patient rejects a transplanted kidney because of ..........

$A$ molecule that elicits an immune response is called

Select the lymphoid organs from the given choices:
$I$. Lymph node $II$. Thymus gland
$III$. Red bone marrow $IV$. Liver
$V$. Spleen $VI$. Osteocytes
$VII$. Peyer's patches
The correct option is:

Lymph nodes are responsible for fighting against which of the following?

Select the incorrect statement with respect to acquired immunity.

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 the above statements,choose the most appropriate answer from the options given below: