NEET Practice Tests by Samarth Biology Tutorials Latur- 2023Versión en línea These are some practice tests for NEET - 2024 - Biology por RAMAN OZA SBTL LATUR 1 Bundle of His are a Nerve fibres in wall of atria, similar to muscle fibres b Nerve fibres in wall of ventricles, similar to muscle fibres c Muscle fibres in wall of atria, similar to nerve fibres d Muscle fibres in wall of Ventricles, similar to nerve fibres 2 Considering the chordae tendineae of tricuspid valve are partly non functional, which of the following is likely to happen? a There will be sudden fall in the flow of blood to lungs b Systemic circulation would receive less blood supply c Aorta will get flooded with increased amount of blood d The cardiac pacemaker would stop producing impulse 3 There is no DNA in- a An ovum whose nucleus is removed b A germinated pollen grain c A mature mammalian erythrocyte d An eosinophil and a basophil 4 Albumin and Globulins respectively, help in - a Mainly blood clotting both b Maintaining osmotic balance of body fluids and blood clotting c Defence against diseases and blood clotting1 d Maintaining osmotic balance of body fluids and Immunity 5 Megakaryocytes are cells those- a form blood platelets and are enucleated b Precursor cells of thrombocytes and are biconcave in mammals c Have a large nucleus and produced from cells in bone marrow d are more in number than RBCs and less in count than WBCs 6 Heart with just one ventricle is found in- a Hyla, salamander and Shark b Shark, Dolphin and Salamander c Hyla, Hemidactylus and Ray d Bungarus, Toad and Frog 7 Intestinal villi in human digestive system absorb, digested lipids after action of Lipases, into - a Network of blood capillaries, below the surface epithelium of villi b Specialised lymphatic capillaries, inside the villi c Lactiferous ducts d basement membrane of intestinal epithelial cells 8 Exit of left ventricle in human heart, is guarded by- a Mitral valve b Tricuspid valve c Aortic Semilunar valve d Pulmonary semilunar valve 9 A casualty results into much loss of blood from a person’s body. Without any delay, one of his relatives could donate him his blood, without any complication. What might be the blood group of that donor relative ? a Type A b Type B c Type AB d Type O 10 If the heart rate increases, the span of cardiac cycle- a Will increase b Will reduce c Won't be affected d will get doubled 11 The stroke volume of blood, in human beings, is ejected in ? a Every One Second b Every One Minute c Every 0.8 seconds d After every 72 beats 12 Phagocytosis is the function of- a Eosinophils and Lymphocytes b Monocytes and Basophils0 c Neutrophils and Monocytes d Thrombocytes and monocytes 13 Heart rate will increase if the neural signals will reach to heart, from- a Vagus nerve b Sympathetic nerve c Purkinje Fibers d Atrio-Ventricular node 14 The two heart sounds are respectively heard in the stethoscope, as a result of closure of - a Bicuspid and tricuspid Valves b Tricuspid and Bicuspid Valves c Semilunar valve and Tricuspid valve d Atrioventricular and semilunar valves Feedback 2 Tricuspid valve is the right atrioventricular valve. When it is closed, the blood from right ventricle will be ejected into pulmonary circulation. 3 An ovum after removing nucleus, still has mitochondrial DNA that results into purely maternal inheritance. All other options have cells with nucleus, except Erythrocytes. However camels are exception. 4 Albumin and Globulin are plasma proteins. Albumin helps to regulate the osmotic balance of blood and globulins include mainly immunoglobulins, those help in setting defence against infectious pathogens. 5 Megakaryocytes are precursor cells, those produce thrombocytes. They are called so because they have a large nucleus. 6 Just one and unpartitioned ventricle, is found in Fishes and Amphibians.
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