Observe the diagram and answer the following question :
Diagrammatic representation of Lymphatic system.
A, B and C labelled in the diagram are :
(A) Thymus
(B) Lymph nodes
(C) Lymphatic vessels
(D) Bone marrow
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → (B), (A), (C) respectively
In the figure, A points to the clusters in the armpits, the lymph nodes; B points to the organ behind the breastbone, the thymus; and C points to the fine branching tubes of the legs, the lymphatic vessels.
Option (1) (A), (B), (D) respectively — Incorrect. It makes A the thymus and C the bone marrow; the bone marrow lies inside the long bones and is not marked.
Option (2) (B), (A), (C) respectively — Correct. In the diagram, A points to the small structures along the lymph vessels, the lymph nodes; B is the lobed organ near the heart, the thymus; and C is the network that carries lymph, the lymphatic vessels.
Option (3) (A), (C), (B) respectively — Incorrect. It makes A the thymus, B the lymphatic vessels and C the lymph nodes.
Option (4) (C), (B), (A) respectively — Incorrect. It makes A the lymphatic vessels and C the thymus, the wrong way round.
Note: The original NTA paper prints both Option (1) and Option (3) as “(A), (B), (D) respectively”; Option (3) has been changed to “(A), (C), (B) respectively” so that every option is different.