Question

Select the odd one in the following:
(i) RBC, WBC, Blood platelets, Histone.
(ii) Tricuspid, Bicuspid, Semilunar, Foramen ovales.
(iii) Artery, Vein, Capillary, Nerve.
(iv) Monocytes, Lympocytes, Basophils, RBC.
(v) Prothrombin, Thrombin, Fibrinogen, Albumin.

Answer 1

(i) Histone
RBC, WBC and blood platelets are blood corpuscles while histone is a protein that is present in cell nuclei in association with nucleic acids.

(ii) Foramen ovale
The foramen ovale is a small aperture located in the atrial septum during the embryonic phase of life while tricuspid, bicuspid and semilunar are valves found in the heart.

(iii) Nerve
A nerve is a bundle of nerve fibres running to various organs and tissues of the body while artery, vein and capillary are three types of blood vessels.

(iv) RBC
RBC is a non-nucleated red coloured cell while monocytes, lymphocytes and basophils are types of leukocytes or WBCs.

(v) Albumin
Albumin is a plasma protein while prothrombin, thrombin and fibrinogen are blood coagulating factors.