Please refer to the MCQ Questions for Class 11 Biology Chapter 18 Body Fluids and Circulation with Answers. The following Body Fluids and Circulation Class 11 Biology MCQ Questions have been designed based on the latest syllabus and examination pattern for Class 11. Our experts have designed MCQ Questions for Class 11 Biology with Answers for all chapters in your NCERT Class 11 Biology book.
Body Fluids and Circulation Class 11 MCQ Questions with Answers
See below Body Fluids and Circulation Class 11 Biology MCQ Questions, solve the questions and compare your answers with the solutions provided below.
Question . Lymph differs from blood in possessing
(a) only WBC
(b) more RBC and WBC
(c) more RBC and few WBC
(d) more WBC and few RBC.
Question . The QRS complex in a standard ECG represents
(a) repolarisation of auricles
(b) depolarisation of auricles
(c) depolarisation of ventricles
(d) repolarisation of ventricles.
Question . What would be the heart rate of a person if the cardiac output is 5 L, blood volume in the ventricles at the end of diastole is 100 mL and at the end of ventricular systole is 50 mL ?
(a) 125 beats per minute
(b) 50 beats per minute
(c) 75 beats per minute
(d) 100 beats per minute
Question. When the blood of a foetus is agglutinated by its mother’s Rh antibodies, then which of the following condition arises as a severe anaemia?
(b) Ectopic pregnancy
(c) Erythroblastosis foetalis
(d) Both (b) and (c)
Question. __________ plays an important role in blood clotting.
Question. Which of the following cations is required for the conversion of prothrombin into active thrombin by thromboplastin?
Question . Doctors use stethoscope to hear the sounds produced during each cardiac cycle. The second sound is heard when
(a) AV node receives signal from SA node
(b) AV valves open up
(c) Ventricular walls vibrate due to gushing in of blood from atria
(d) Semilunar valves close down after the blood flows into vessels from ventricles.
Question . Blood pressure in the mammalian aorta is maximum during
(a) systole of the left ventricle
(b) diastole of the right atrium
(c) systole of the left atrium
(d) diastole of the right ventricle.
Question . ‘Bundle of His’ is a part of which one of the following organs in humans?
Question . If due to some injury the chordae tendinae of the tricuspid valve of the human heart is partially nonfunctional,what will be the immediate effect?
(a) The flow of blood into the aorta will be slowed down.
(b) The ‘pacemaker’ will stop working.
(c) The blood will tend to flow back into the left atrium.
(d) The flow of blood into the pulmonary artery will be reduced.
Question. Clotting of blood is to
(a) seal up wounds and prevent blood loss.
(b) slow down the movement of blood inside the blood vessels.
(c) trap oxygen inside the blood so that it can be carried around more easily.
(d) trap harmful germs inside the blood and prevent them from harming the body.
Question. Fish has ___(i)____ and ___(ii)___ circulatory system.
(a) (i)- open, (ii)- single
(b) (i)- open, (ii)- double
(c) (i)- closed, (ii)- single
(d) (i)- closed, (ii)- double
Question. Open type blood vascular system is found in
Question. Which of the following set of animals has an incomplete double circulation system ?
(a) Frog and crocodile
(b) Shark and whale
(c) Lizard and pigeon
(d) Toad and lizard
Question . In a standard ECG which one of the following alphabets is the correct representation of the respective activity of the human heart?
(a) S – start of systole
(b) T – end of diastole
(c) P – depolarisation of the atria
(d) R – repolarisation of ventricles
Question . In humans, blood passes from the post caval to the diastolic right atrium of heart due to
(a) stimulation of the sino auricular node
(b) pressure difference between the post caval and atrium
(c) pushing open of the venous valves
(d) suction pull.
Question . Which one of the following has an open circulatory system?
Question . The cardiac pacemaker in a patient fails to function normally. The doctors find that an artificial pacemaker is to be grafted in him. It is likely that it will be grafted at the site of
(a) atrioventricular bundle
(b) Purkinje system
(c) sinoatrial node
(d) atrioventricular node.
Question . Bundle of His is a network of
(a) muscle fibres distributed throughout the heart walls
(b) muscle fibres found only in the ventricle wall
(c) nerve fibres distributed in ventricles
(d) nerve fibres found throughout the heart.
Question . Systemic heart refers to
(a) the heart that contracts under stimulation from nervous system
(b) left auricle and left ventricle in higher vertebrates
(c) entire heart in lower vertebrates
(d) the two ventricles together in humans.
Question . Impulse of heart beat originates from
(a) SA node
(b) AV node
(c) vagus nerve
(d) cardiac nerve.
Question . The heart sound ‘dup’ is produced when
(a) mitral valve is closed
(b) semi-lunar valves at the base of aorta get closed
(c) tricuspid valve is opened
(d) mitral valve is opened.
Question . The pacesetter in the heart is called
(a) sino-atrial node (SAN)
(b) atrio-ventricular node (AVN)
(c) Purkinje fibres
(d) papillary muscle.
Question . In mammals, which blood vessel would normally carry largest amount of urea?
(a) Hepatic vein
(b) Hepatic portal vein
(c) Renal vein
(d) Dorsal aorta
Question . Which one of the following animals has two separate circulatory pathways?
Question . Arteries are best defined as the vessels which
(a) supply oxygenated blood to the different organs
(b) carry blood away from the heart to different organs
(c) break up into capillaries which reunite to form a vein
(d) carry blood from one visceral organ to another visceral organ.
Question . Fastest distribution of some injectible material/medicine and with no risk of any kind can be achieved by injecting it into the
(d) lymph vessels.
Question . Difference between pulmonary artery and pulmonary vein is that, the pulmonary artery has
(a) no endothelium
(c) thicker walls
(d) oxygenated blood.
Question. Lymph differs from blood in
(a) absence of RBC
(b) absence of WBC
(c) excess of water
(d) absence of protein
Question. Lymph is modified blood that contains
(a) RBC and WBC
(b) RBC, WBC and protein
(c) WBC and all protein
(d) all contents of blood except RBC and certain protein
Question. In blood
(a) WBCs are more than RBCs
(b) RBCs are more than WBCs
(c) RBCs are less than platelets
(d) Platelets are less than WBCs
Question. Which one engulfs pathogens rapidly?
Question. What is true about leucocytes ?
(a) Their sudden fall in number is indication of blood cancer
(b) These are produced in thymus
(c) These are enucleated
(d) These can squeeze out through the capillary walls
Question. What is correct for blood group ‘O’?
(a) No antigens but both a and b antibodies are present
(b) A antigen and b antibody
(c) Antigen and antibody both absent
(d) A and B antigens and a, b antibodies
Question. Rh factor is named after
Question . In which point, pulmonary artery is different from pulmonary vein?
(a) Its lumen is broad.
(b) Its wall is thick.
(c) It has valves.
(d) It does not possess endothelium.
Question . Which vertebrate organ receives only oxygenated blood?
Question . In veins, valves are present to check backward flow
of blood flowing at
(a) atmospheric pressure
(b) high pressure
(c) low pressure
(d) all of these.
Question. Which of the following is considered as the soldiers of body?
(c) Red blood cells
(d) White blood cells
Question. Which of the following is responsible for ABO grouping?
(a) Presence or absence of clotting factors.
(b) Compatibility of blood groups during blood transfusion.
(c) Presence or absence of surface antigens (A and B) on WBCs.
(d) Presence or absence of two surface antigens (A and B) on the RBCs.
Question . A vein possesses a large lumen because
(a) tunica media and tunica externa form a single coat
(b) tunica interna and tunica media form a single coat
(c) tunica interna, tunica media and tunica externa are thin
(d) tunica media is a thin coat.
Question . Arteries carry oxygenated blood except
Question . How do parasympathetic neural signals affect the working of the heart?
(a) Reduce both heart rate and cardiac output.
(b) Heart rate is increased without affecting the cardiac output.
(c) Both heart rate and cardiac output increase.
(d) Heart rate decreases but cardiac output increases.
Question . Which one of the following statements is correct regarding blood pressure?
(a) 130/90 mm Hg is considered high and requires treatment.
(b) 100/55 mm Hg is considered an ideal blood pressure.
(c) 105/50 mm Hg makes one very active.
(d) 190/110 mm Hg may harm vital organs like brain and kidney.
Question . Given below are four statements (i-iv) regarding human blood circulatory system.
(i) Arteries are thick-walled and have narrow lumen as compared to veins.
(ii) Angina is acute chest pain when the blood circulation to the brain is reduced.
(iii) Persons with blood group AB can donate bloodto any person with any blood group under ABO system.
(iv) Calcium ions play a very important role in blood clotting.
Which two of the above statements are correct?
(a) (i) and (iv)
(b) (i) and (ii)
(c) (ii) and (iii)
(d) (iii) and (iv)
Question . The thickening of walls of arteries is called
(d) both (b) and (c).
Question . An adult human with average health has systolic and diastolic pressures as
(a) 120 mm Hg and 80 mm Hg
(b) 50 mm Hg and 80 mm Hg
(c) 80 mm Hg and 80 mm Hg
(d) 70 mm Hg and 120 mm Hg.
Question . Tricuspid valve is found in between
(a) sinus venosus and right auricle
(b) right auricle and right ventricle
(c) left ventricle and left auricle
(d) ventricle and aorta.
Question . The hepatic portal vein drains blood to liver from
Question . Blood pressure in the pulmonary artery is
(a) more than that in the pulmonary vein
(b) less than that in the venae cavae
(c) same as that in the aorta
(d) more than that in the carotid.