CBSE Questions for Class 11 Medical Biology Body Fluids And Circulation Quiz 16 - MCQExams.com

Megakaryocytes, special cells in the bone marrow that produce cell fragments are called :
  • Leucocytes
  • Erythrocytes
  • Thrombocytes
  • Fibrinogen
Serum differs from blood in lacking
  • Globulins
  • Albumins
  • Clotting factors
  • Antibodies
ECG is a recording of electrical activity of the brain waves.
  • True
  • False
Choose the correct answer from the alternatives given.
Which of the following represents the pulmonary circulation as the blood flows from 
the right ventricle?
  • Pulmonary trunk $$\rightarrow$$ pulmonary veins $$\rightarrow$$ pulmonary capillaries $$\rightarrow$$ pulmonary arteries
  • Pulmonary arteries $$\rightarrow$$ pulmonary capillaries $$\rightarrow$$ pulmonary trunk$$\rightarrow$$ pulmonary veins
  • Pulmonary capillaries $$\rightarrow$$ pulmonary trunk $$\rightarrow$$ pulmonary arteries $$\rightarrow$$ pulmonary veins
  • Pulmonary trunk $$\rightarrow$$ pulmonary arteries $$\rightarrow$$ pulmonary capillaries $$\rightarrow$$ pulmonary veins
Select the incorrectly matched pair.
  • Leukopenia - Fall in WBCs count
  • Polycythemia - Abnormal rise in RBCs count
  • Thrombocytosis - Decrease in number of platelets
  • Erythrocytopenia - Decrease in number of RBCs
Choose the correct answer from the alternatives given.
Which of the following is the part of a closed, but not an open, circulatory system?
  • Heart
  • Haemocoel
  • Capillary beds
  • Ostia
Choose the correct answer from the alternatives given.
Which of the following associations is incorrect?
  • Platelets-blood clotting
  • Plasma-water, nutrients, and wastes
  • Red blood cells-blood clotting
  • White blood cells-infection fighting
Identity the wrongly matched pairs 
  • Monocyte - Actively phagocytic
  • Thrombocyte - Produces antibodies
  • Lymphocyte - Initiates blood clotting
  • Eosinophil - Associated with allergy
ECG gives important information regarding all the following conditions, except?
  • Heart block
  • Angina pectoris
  • Cardiac output
  • Change in heart rate
A common characteristic feature of plant sieve tube cells and most of mammalian erythrocytes is
  • Absence of mitochondria
  • Presence of cell wall
  • Presence of haemoglobin
  • Absence of nucleus
Bicarbonate ions are produced inside 
  • Baseophils
  • Neutrophils
  • Erythrocyte
  • Lymphocyte
Platelets are formed by .....P ..... of special cells in ....Q.......
  • P - Division , Q - Bone Marrow
  • P - Division , Q - Lymph nodes
  • P - Fragmentation , Q - Bone Marrow
  • P - Fragmentation , Q - Lymph nodes
A patient was administered a chemical agent called Guanfacine hydrochloride after the patient showed the symptoms like shortness of breath and headache. Guantacme hydrochloride is a known stimulant of central $$\alpha - 2 $$ -adrenergic receptors of the medulla regulating the sympathetic nervous system. The patient in this case must be suffering from
  • Hypertension
  • Hyperslimulation
  • Hyperpolarization
  • None of the above
Lungs receive blood from right side of the heart, whereas the branching of systemic arteries result in a parallel pattern. What is the advantage of such of an arrangement?
  • It ensures that each of the peripheral organs and tissues receive only a fraction of blood pumped by the left ventricle.
  • It allows for independent variation in blood flow through different tissues as their metabolic activities change.
  • It ensures that as blood flows through the capillaries, some of the oxygen leaves the blood to enter cells.
  • Both a and b
RBC loses its nucleus at which stage
  • Erythroblast
  • Reticulicyte
  • Normoblast
  • Rubriblast
Match the cells listed under column I with their animal or animal groups under column III. Choose the answer, which gives the correct combination of the alphabets of the two columns.

Column I(Cells)
Column II(Animal Examples)
$$1$$NematocystpVertebrates
$$2$$ChoanocytesqFlat worms
$$3$$Flame cellsrSponges
$$4$$ErythrocytessCoelenterates


tRound worms
  • $$1=$$q, $$2=$$r, $$3=$$s, $$4=$$t
  • $$1=$$r, $$2=$$s, $$3=$t, $$4=$$p
  • $$1=$$s, $$2=$$r, $$3=$$q, $$4=$$t
  • $$1=$$s, $$2=$$r, $$3=$$q, $$4=$$p
Which of the following disorder of circulatory system is NOT CORRECTLY stated ?
  • Hypertension
  • CAD
  • Angina
  • Heart failure
Which animal has the highest surface area to volume ratio?
  • D
  • C
  • A
  • B
The figure shows blood circulation in humans with labels A to D. Select the option which gives correct identification of the label and functions of the part.
1430744_72226d4b97364716be2250967c5fdd0b.PNG
  • B-CAPILLARY - Thin without muscle layer and wall is two cell layer thick
  • C-VEIN- Thin walled and blood flows in jerks/spurts
  • D-PULMONARY VEIN- Takes oxygenated blood from heart, $$pO_2=100$$ mm of Hg
  • A-ARTERY-Thick walled and blood flows evenly
Blood is a liquid connective tissue derived from
  • Epidermis
  • Endoderm
  • Mesoderm
  • Ectoderm
During acute myocardial infarction which of the following changes occurs in the ECG.
  • Flattened T wave
  • Depressed ST segment
  • Elevated ST segment
  • Increased length of PQ interval
Time interval between DUP and LUBB is ______ coincide with _____
  • $$0.3$$ sec, ventricular systole
  • $$0.3$$ sec, joint diastole and atrial systole
  • $$0.4$$ sec, joint diastole
  • $$0.4$$ sec, atrial systole
Birds and mammals have:
  • Single and closed type circulation
  • Double and open type circulation
  • Double and closed type circulation
  • Single and open type circulation
A cardiac cycle involves the sequence
  • Joint diastole-ventricular systole-auricular systole
  • Auricular systole-ventricular systole-complete cardiac diastole
  • Auricular systole-joint diastole-ventricular systole
  • Auricular systole-ventricular diastole-joint diastole
The longest phase in cardic cycle is-
  • Atrial systole
  • Atrial diastole
  • Ventricular systole
  • Ventricular diastole
0:0:1


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