Q. No.The opening between the right atrium and the right ventricle is guarded by the valve named
(1) bicuspid valve
(2) tricuspid valve
(3) mitral valve
(4) semilunar valve
Ventricular diastole occurs due to a/an
(1) Organ system
(2) Cell organelle
(3) Tissue
(4) Organ
Identify the given figure and select the correct option
(1) Neutrophil - phagocytic cell which destroy foreign organisms entering the body
(2) Eosinophil - their number increases during allergic infection
(3) Lymphocyte - small sized non-motile and non-phagocytic
(4) Monocyte - motile and phagocytic in nature
Which one of the following vitamins is anti-haemorrhagic?
(1) Vitamin B12
(2) Vitamin B5
(3) Vitamin C
(4) Vitamin K
Mature RBCs lose their ability for
(1) DNA replication
(2) Anaerobic respiration
(3) Aerobic respiration and DNA replication
(4) Aerobic respiration, DNA replication and RNA synthesizing machinery
The given figure shows schematic plan of blood circulation in humans with labels A to D. Identify the labels along with their functions and select the correct option.
(1) C - Vena Cava - takes blood from body parts to right atrium, PCO2 = 45 mm Hg
(2) D - Dorsal aorta - takes blood from heart to body parts, PO2 = 95 mm Hg
(3) A - Pulmonary vein - takes impure blood from body parts to heart, PO2 = 60 mm Hg
(4) B - Pulmonary artery - takes blood from heart to lungs, PO2 = 90 mm Hg.
After examining the blood groups of husband and wife, the doctor advised them not to have more than one child. The blood groups of the couple are likely to be
(1) Male Rh- and Female Rh+
(2) Male Rh+ and Female Rh+
(3) Male Rh+ and Female Rh-
(4) Male Rh- and Female Rh-
Which of the following human organs is called the 'graveyard of RBCs?
(1) Gall bladder
(2) Kidney
(3) Spleen
(4) Liver
Haemoglobin is
(1) an oxygen carrier in human blood
(2) a protein used as food supplement
(3) an oxygen scavenger in root nodules
(4) a plant protein with high lysine content
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