Both acidic and alkaline mediumNeutral medium       When we breathe in ourRibs are lifted and diaphragm is flattenedRibs are lifted and diaphragm is curvedRibs are pushed down and diaphragm is flattenedRibs are pushed down and diaphragm is curved       Lungs receive deoxygenated blood from which chamber of the heartRight atriumLeft atriumRight ventricleLeft ventricle       Which among the following has two chambered heartAmphibiansFishesReptilesBoth A and C       The blood corpuscle which plug the leaks by helping to clot the blood at the points of injury isErythroblastsLeucocytesLymphocytesPlatelets       Plants intake nitrogen and phosphorus abundantly fromSoilWaterAirSunlight       Which of the following tissue is responsible for water transportation in plantsXylem tissuePhloem TissueMeristematic tissueCollenchyma tissue       What creates the suction to pull the water from xylem cells of rootsPhotosynthesis in leavesEvaporation in leavesGas exchange in leavesAll the above       Phloem in the plants are responsible forTransportation of oxygenTransportation of waterTransportation of amino acidsTransportation of minerals

rted into bicarbonate ionsIt is stored in the lung tissue       Which chamber of the heart receives oxygen-rich blood from the lungs?Right atriumLeft atriumRight ventricleLeft ventricle       Identify A,B,C and D in the following schematic plan of blood circulation in humans diagram.A) pulmonary vein, B) aorta, C) vena cava, D) pulmonary arteryA) pulmonary artery, B) aorta, C) pulmonary vein, D) vena cavaA) vena cava, B) pulmonary vein, C) aorta, D) pulmonary veinA) aorta, B) pulmonary vein, C) pulmonary artery, D) vena cava       Which chamber of the heart receives deoxygenated blood from the body?Left atriumRight atriumLeft ventricleRight ventricle       What is the term used to describe the circulatory system in vertebrates where blood passes through the heart twice during each cycle?Pulmonary CirculationDouble circulationSystemic CirculationBoth B and C       Which of the following statements about veins is true?Veins have thick walls to withstand high pressure.Veins have thin walls because the blood is no longer under high pressure.Veins lack valves because blood flows under high pressure.Veins only carry oxygenated blood.       What is the primary function of the blood in relation to carbon dioxide?To transport oxygen to body tissuesTo bring carbon dioxide from the rest of the body for release into the alveoliTo deliver nutrients to the cells of the bodyTo carry hormones to target organs of the body       Which of the following statements about the diaphragm is correct?It forms the roof of the chest cavityIt separates the chest from the abdomenIt is made of cartilageIt is responsible for secreting digestive enzymes       What happens to pyruvate when there is insufficient oxygen in muscle cells?It is converted into glucoseIt is converted into lactic acidIt is stored as glycogenIt is released as carbon dioxide

The lungs are covered byPleuraScleraPericardiumNone of the above

Which of the following is incorrect regarding the anatomy of the heart?Group of answer choicesThe cardiac muscle of the right ventricle is thicker than the left ventricle.The septum prevents the mixing of oxygenated and deoxygenated blood.Unidirectional flow through the heart is mediated by the heart’s valves.Pulmonary valve controls the flow of blood from the heart to the lungs.

Which chamber of the heart pumps blood into the pulmonary circuit?Multiple Choiceright atriumright ventricleleft atriumleft ventricleaorta

Fill in the Blank QuestionFill in the blank question.Blood from the right ventricle flows to the , which then splits into two arteries (left and right) that lead into the lungs.