Choose the odd one out from the following terms and name the category to which the others belong:
Tonsils, Glomerulus, Spleen, Lymph nodes
Topic: Lymphatic organs
Answer
Odd one out: GLOMERULUS. Category of the others: LYMPHATIC ORGANS / ORGANS OF THE LYMPHATIC SYSTEM.
Tonsils, spleen and lymph nodes all belong to the LYMPHATIC SYSTEM, which filters lymph and produces lymphocytes as part of the body’s defence.
The GLOMERULUS is a knot of blood capillaries inside Bowman’s capsule in the kidney, where ULTRAFILTRATION takes place. It belongs to the EXCRETORY system.
THE NEAR-MISS to watch for: all four are involved in FILTERING something, so a candidate might argue they all belong together. But three filter LYMPH as part of one system, while the glomerulus filters BLOOD as part of another. The category that covers three is lymphatic organs.