861 There are _________ hypothesis which may explain opening and closing of stomata? Biology Medium Full question → A One B Two C Three D Four
862 The opening and closing of stomata is directly controlled by the___________? Biology Medium Full question → A Temperature B pH C Light D None of these
863 Pressure flow theory was proposed by_________? Biology Medium Full question → A H-Van Mohl B Dixon C Vander wall. D Earnst Munch
864 Open circulatory system can contain_________? Biology Medium Full question → A Red Blood Cells B White Blood Cells C Haemoglobin D All of these
865 95% of the cytoplasm of red blood cells is the___________? Biology Medium Full question → A Antibodies B Hemoglobin C Enzymes D Proteins
866 _________ give rise to macrophages, which destroy larger particles by phagocytosis. Biology Medium Full question → A Nautrophils B Basophila C Monocyte D Lymphocyte
867 ___________ function as multisensory hydraulic valve? Biology Medium Full question → A Lenticels B Guard cells C Hydathods D All of these
868 Stomatal transpiration is __________ of total transpiration Biology Medium Full question → A 90% B 91% C 93% D 95%
869 A pressure created by active secretion of salts and other solutes from other cells into xylem sap is called___________? Biology Medium Full question → A Transpiration pull B Root pressure C Osmotic pressure. D None of these
870 Pulling upward of water and dissolved minerals towards the leaves through the xylem tissue is called__________? Biology Medium Full question → A Transpiration pull B Root pressure C Ascent of sap. D All of these
871 Transport of minerals from soil to epidermal cells of roots via carrier protein molcules along their concentration gradient is called___________? Biology Medium Full question → A Diffusion. B Facilitated diffusion. C Passive transport. D Active transport.
872 Lenticels look like__________? Biology Medium Full question → A A big pore B Stoma C Sponge D Cars or small protusions
873 Aerating openings formed in the bark through which exchange of gases takes place and water is lost in the form of vapours are___________? Biology Medium Full question → A Hydathods B Stomata C Lenticels D None of these
874 Which of the following are proteins in nature? Biology Medium Full question → A Antibodies. B Interferons C Antitoxins D All of these
875 Cooley’s anemia is another name used for___________? Biology Medium Full question → A Leucemia B Thalassaemia C Sickle cell anemia D None of these
876 Tricuspid valve is present_____________? Biology Medium Full question → A Between right atrium and right ventricle B Between left atrium and left ventricle C At base of pulmonary artery D At base of aorta
877 QRS complex represents____________? Biology Medium Full question → A Atrial systole B Ventricular systole C Atrial diastole D Ventricular diastole
878 Which of the following have thickest walls? Biology Medium Full question → A Arteries B Veins C Capillaries D None of these
879 It is the measure of force with which blood pushes up against the walls of blood vessels. Biology Medium Full question → A Stroke volume B Cardiac output C Blood pressure D Blood flow
880 All of the follwing are blood clots except:___________? Biology Medium Full question → A Thrombus B Embolus C Atheroma D Hematoma