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) $$1$$ Nematocyst p Vertebrates $$2$$ Choanocytes q Flat worms $$3$$ Flame cells r Sponges $$4$$ Erythrocytes s Coelenterates t Round worms

$$1=$$s, $$2=$$r, $$3=$$q, $$4=$$p

$$1=$$q, $$2=$$r, $$3=$$s, $$4=$$t

$$1=$$r, $$2=$$s, $$3=$t, $$4=$$p

$$1=$$s, $$2=$$r, $$3=$$q, $$4=$$t

MCQ Questions for Class 11 Medical Biology Body Fluids And Circulation Quiz 16

Megakaryocytes, special cells in the bone marrow that produce cell fragments are called :

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Leucocytes
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Erythrocytes
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Thrombocytes
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Fibrinogen

Serum differs from blood in lacking

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Globulins
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Albumins
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Clotting factors
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Antibodies

ECG is a recording of electrical activity of the brain waves.

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True
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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?

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Pulmonary trunk $\rightarrow$ pulmonary veins $\rightarrow$ pulmonary capillaries $\rightarrow$ pulmonary arteries
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Pulmonary arteries $\rightarrow$ pulmonary capillaries $\rightarrow$ pulmonary trunk $\rightarrow$ pulmonary veins
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Pulmonary capillaries $\rightarrow$ pulmonary trunk $\rightarrow$ pulmonary arteries $\rightarrow$ pulmonary veins
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Pulmonary trunk $\rightarrow$ pulmonary arteries $\rightarrow$ pulmonary capillaries $\rightarrow$ pulmonary veins

Explanation

Pulmonary circulation is the system of blood vessels that form a closed circuit between the heart and the lungs, as distinguished from the systemic circulation between the heart and all other body tissues. Deoxygenated blood leaves from the right ventricle through the pulmonary trunk which branches into the left and right pulmonary arteries to reach pulmonary capillaries in the lungs. At the lungs, blood gets oxygenated and returns to left atrium of heart via pulmonary veins

So, the correct option is 'Pulmonary trunk

$\rightarrow$ pulmonary arteries

$\rightarrow$ pulmonary capillaries

$\rightarrow$ pulmonary veins'.

Select the incorrectly matched pair.

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Leukopenia - Fall in WBCs count
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Polycythemia - Abnormal rise in RBCs count
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Thrombocytosis - Decrease in number of platelets
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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?

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Heart
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Haemocoel
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Capillary beds
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Ostia

Choose the correct answer from the alternatives given.
Which of the following associations is incorrect?

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Platelets-blood clotting
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Plasma-water, nutrients, and wastes
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Red blood cells-blood clotting
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White blood cells-infection fighting

Identity the wrongly matched pairs

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Monocyte - Actively phagocytic
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Thrombocyte - Produces antibodies
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Lymphocyte - Initiates blood clotting
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Eosinophil - Associated with allergy

ECG gives important information regarding all the following conditions, except?

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Heart block
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Angina pectoris
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Cardiac output
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Change in heart rate

A common characteristic feature of plant sieve tube cells and most of mammalian erythrocytes is

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Absence of mitochondria
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Presence of cell wall
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Presence of haemoglobin
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Absence of nucleus

Bicarbonate ions are produced inside

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Baseophils
0%
Neutrophils
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Erythrocyte
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Lymphocyte

Platelets are formed by .....P ..... of special cells in ....Q.......

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P - Division , Q - Bone Marrow
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P - Division , Q - Lymph nodes
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P - Fragmentation , Q - Bone Marrow
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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

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Hypertension
0%
Hyperslimulation
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Hyperpolarization
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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?

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It ensures that each of the peripheral organs and tissues receive only a fraction of blood pumped by the left ventricle.
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It allows for independent variation in blood flow through different tissues as their metabolic activities change.
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It ensures that as blood flows through the capillaries, some of the oxygen leaves the blood to enter cells.
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Both a and b

Explanation

$\textbf{Correct option:}$

$\textbf{(D)}$

$\textbf{Solution:}$

$\textbf{Option (A)}$

$\bullet$ The right side of the heart supplies blood to the lungs, while the branching of systemic arteries creates a parallel pattern.

$\bullet$ This system provides a lot of benefits.

$\bullet$ It ensures that only a fraction of the blood pumped by the left ventricle reaches the peripheral organs and tissues.

$\textbf{Option (B)}$

$\bullet$ As an individual's metabolic activity alter, this type of setup allows for independent variation in blood flow across different tissues.

$\bullet$ This approach ensures that all systemic tissues receive fresh oxygenated I blood while also allowing for independent blood flow fluctuation.

$\textbf{Thus the Correct option is (D).}$

RBC loses its nucleus at which stage

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Erythroblast
0%
Reticulicyte
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Normoblast
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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)
$1$	Nematocyst	p	Vertebrates
$2$	Choanocytes	q	Flat worms
$3$	Flame cells	r	Sponges
$4$	Erythrocytes	s	Coelenterates
		t	Round worms

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$1=$ q, $2=$ r, $3=$ s, $4=$ t
0%
$1=$ r, $2=$ s, $3=$t,$ 4=$$p
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$1=$ s, $2=$ r, $3=$ q, $4=$ t
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$1=$ s, $2=$ r, $3=$ q, $4=$ p

Which of the following disorder of circulatory system is NOT CORRECTLY stated ?

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Hypertension
0%
CAD
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Angina
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Heart failure

Which animal has the highest surface area to volume ratio?

0%
D
0%
C
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A
0%
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.

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B-CAPILLARY - Thin without muscle layer and wall is two cell layer thick
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C-VEIN- Thin walled and blood flows in jerks/spurts
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D-PULMONARY VEIN- Takes oxygenated blood from heart, $pO_2=100$ mm of Hg
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A-ARTERY-Thick walled and blood flows evenly

Blood is a liquid connective tissue derived from

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Epidermis
0%
Endoderm
0%
Mesoderm
0%
Ectoderm

During acute myocardial infarction which of the following changes occurs in the ECG.

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Flattened T wave
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Depressed ST segment
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Elevated ST segment
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Increased length of PQ interval

Time interval between DUP and LUBB is ______ coincide with _____

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$0.3$ sec, ventricular systole
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$0.3$ sec, joint diastole and atrial systole
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$0.4$ sec, joint diastole
0%
$0.4$ sec, atrial systole

Birds and mammals have:

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Single and closed type circulation
0%
Double and open type circulation
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Double and closed type circulation
0%
Single and open type circulation

Explanation

Birds and mammals have four-chambered hearts. Their circulatory system is called the double circulatory system because blood passes through the heart twice:

Body

$\rightarrow$ Heart

$\rightarrow$ Lungs

$\rightarrow$ Heart

$\rightarrow$ Body

Birds and mammals have a closed type of circulation wherein the blood does not directly come in contact with the cells or tissues but instead flows in tube-like structures called the arteries, veins, and capillaries.

So, the correct answer is option C.

A cardiac cycle involves the sequence

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Joint diastole-ventricular systole-auricular systole
0%
Auricular systole-ventricular systole-complete cardiac diastole
0%
Auricular systole-joint diastole-ventricular systole
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Auricular systole-ventricular diastole-joint diastole

The longest phase in cardic cycle is-

0%
Atrial systole
0%
Atrial diastole
0%
Ventricular systole
0%
Ventricular diastole

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

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Practice Class 11 Medical Biology Quiz Questions and Answers

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

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Practice Class 11 Medical Biology Quiz Questions and Answers

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