Assertion : Lymph nodes serve to trap the micro-ro-ganisms or other antigens which happen to get into the lymph and tissue fluid.
Reason : Antigen trapped in the lymph nodes are reason-sible for activation of lyymphocytes present there and cause the immune response.

Assertion (A): Lymph acts as a middle man between blood and tissue fluid. Reason (R): Lymph is a colourless fluid.

Assertion. Lymphocytes arise from the stem cells present in the bone marrow and occur in the blood, lymph and connective tissues. Reason. Lymphocytes migrate to bursal lymphoid tissue or to thymus and differentiate into B or T-cells.

Read the following statements :- (a) Lymph is devoid of RBC (b) Exchange of nutrients, gases etc, between blood and the tissue cell always occur through lymph (c) Tissue fluid is also called as lymph. (d) Lymph is a colourless fluid contaning all types of WBCs which are responsible for the immune response of the body.

Assertion: Lymph is a colourless fluid containing specialised lymphocytes which are responsible for the immune response of the body Reason: Lymph is an important carried for ntrient, hormones, etc.

Assertion :- Ring worm disease caused due to Round worm. Reason :- Multiple lymph nodes involve in ring worm.

Assertion : Lymph in lymphatic system is known as tissue fluid Reason : It consists of plasma proteins, RBCs and WBCs.