Tissues Test

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Tissues Test - 83

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Weekly Quiz Competition

Question 1
1 / -0

In a healthy adult man, the smallest type of leucocytes are

A
Basophils

B
Monocytes

C
Eosinophils

D
Lymphocytes

Solution

Lymphocytes are the smallest leukocytes with a rounded nucleus. They flow through the lymphatic system or fluid and are of 2 types- B-Lymphocytes and T-lymphocytes and defend the body against pathogens and infections.
So, the correct answer is 'Lymphocytes'
Question 2
1 / -0

Match the following and choose the correct option from below.
A. Secondary meristem (i) Guard cells
B. Tracheids (ii) Single layer
C. Stomata (iii) Cork
D. Epidermis (iv) Tubular dead cells

A
A-(iii), B-(iv), C-(i), D-(ii)

B
A-(i), B-(ii), C-(iii), D-(iv)

C
A-(iii), B-(ii), C-(iv), D-(i)

D
A-(iii), B-(ii), C-(i), D-(iv)

Solution

A. Secondary meristem in the cortex forms the cork. Cork is made up of compactly arranged dead cells. It contains the waterproof substance suberin.
B. Tracheids are thick-walled tubular structures. They become dead as they mature. They play an important role in the transport of water and minerals vertically in plants.
C. Stomata are small pores found in the epidermis of the leaf. They are bound by two kidney-shaped guard cells.
D. Epidermis is the outermost layer of cells. It is mostly single-layered in all plants but in special cases, it can be more than one like in desert plants.
So, the correct option is A.
Question 3
1 / -0

Muscles with characteristic striations and which are involuntary are:

A
Muscles in the wall of alimentary canal

B
Muscles of the heart

C
Muscles assisting locomotion

D
Muscles of the eyelids

Solution

Cardiac muscles are the ones that resemble the voluntary muscle because of the structure as they have striations in them. But the action is involuntary in nature and completely out of control of the voluntary mind. Cardiac muscles are found in the heart wall.
So, the correct option is 'Muscles of the heart.'
Question 4
1 / -0

Consider the following statements (A - C) each with one or two blanks.
(A)(1) are the most abundant cells (60-65 per cent) of the total WBCs and (2) are the least (0.5-1 per cent) among them.
(B)Platelets are cell fragments produced from (3).
(C)During clot formation, fibrins are formed by the conversion of inactive (4) in the plasma by the enzyme (5).
Which one of the following options, gives the correct fill ups for the respective blank numbers from (1) to (5) in the statements?

A
(l)-Neutrophils, (2)-basophiIs, (4)-fibrinogens, (5)-thrombin

B
(3)-mast cells, (4)-throm bo kinase, (5)prothrombin

C
(3)-megakaryocytes, (4) prothrombin, (5)thrombin

D
(1)-Basophils, (2)-neutrophils, (3)-reticulocytes

Solution

Out of all other leucocytes, the neutrophils (60-65%) are most abundant and the least are basophils (0.5-1%). Platelets are cell fragments produced from megakaryocytes. During the blood clotting, the enzyme thrombin converts inactive fibrinogens into active fibrins..
Thus, the correct answer is '(l)-Neutrophils, (2)-basophiIs, (4)-fibrinogens, (5)-thrombin).'
Question 5
1 / -0

Select the correct option regarding the given figure:

A
D is eosinophil which is found more in asthma patients.

B
B is lymphocyte which helps in blood clotting.

C
C is neutrophil which is phagocytic in nature

D
A is monocyte which releases histamine, serotonin and heparin.

Solution

"C" has a multilobed nucleus - so it represents neutrophils which are phagocytic in nature as they destroy the foreign organism entering the body.
"A" is having a bilobed nucleus so it represents eosinophils.
"B" is having a large kidney-shaped nucleus so it represents monocytes.
"D" is having a non-lobulated, round nucleus so it represents lymphocytes.
Thus, the correct answer is 'C is neutrophil which is phagocytic in nature.'
Question 6
1 / -0

Mineral nutrients absorbed by roots, move to leaves through

A
Xylem

B
Phloem

C
Sieve tube

D
Companion cell

Solution

Xylem plays an important role in conduction of water. Hence, when water moves upward through xylem, minerals absorbed by the roots also move towards leaves through xylem . This is known as ascent of sap.
Hence, (A) is the correct answer.
Question 7
1 / -0

Juxtaglomerular apparatus is made up of

A
Juxtaglomerular cells, macula densa and lacis cells

B
Juxtaglomerular cells, Purkinje cells and chief cells

C
Juxtaglomerular cells, lacis cells and myoepithelial cells

D
Juxtaglomerular cells, macula densa and argentaffin cells

Solution

Juxtaglomerular cells are the smooth muscle cells of both the afferent and efferent arterioles that are swollen and contain dark granules. These cells secrete renin. Macula densa is the epithelium of the distal convoluted tubule that come in contact with the afferent and efferent arterioles. These cells are denser than the other tubular cells. They act as chemoreceptors. Lacis cells are located in the interval between the macula densa and the afferent and efferent arterioles. The function of lacis cells is unknown. All these cells make up juxtaglomerular apparatus.
So the correct answer is 'Juxtaglomerular cells, macula densa and lacis cells'.
Question 8
1 / -0

People living at sea level have around 5 million RBC per cubic millimetre of their blood whereas, those living at an altitude of 5400 metres have around 8 million. This is because at high altitude:

A
people eat more nutritive food so more RBCs are formed

B
people get pollution-free air to breathe and more oxygen is available

C
atmospheric oxygen level is less and hence, more RBCs are needed to absorb the required amount of oxygen to survive

D
there is more UV radiation which enhances RBC production

Solution

The number of RBCs per cubic millimetre of blood is likely to be higher in people living at high altitudes. This is in response to the air being less dense at high altitudes. Thus, more RBCs (haemoglobin) are needed to absorb the required amount of $$O_{2}$$ from the air.
Question 9
1 / -0

Smooth muscles are found in

A
External anal sphincter

B
Internal anal sphincter

C
Internal urethral sphincter

D
Both B and C

Solution

Smooth muscles are also called as involuntary muscles. They are found in the walls of hollow organs like intestines, oesophagus, bronchi, stomach, internal anal sphincter, internal urethral sphincter. The movement of these muscles is not under our control.
Thus, the correct answer is 'B and C.'
Question 10
1 / -0

Which of the following is/are true?

A
The red blood cells (RBCs) in an elephant are much bigger than those in a mouse.

B
There is no correlation between cell size and body size.

C
The red blood cells (RBCs) of an elephant and mouse will be of the same size

D
Both B and C

Solution

There is no correlation between cell size and body size. A larger body size is due to the presence of more cells and not due to cells of bigger size. So, the size of the RBCs in an elephant and a mouse will remain the same. But, their number may vary.
Hence the correct option is D.

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A. Secondary meristem	(i) Guard cells
B. Tracheids	(ii) Single layer
C. Stomata	(iii) Cork
D. Epidermis	(iv) Tubular dead cells

Tissues Test - 83

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Tissues Test - 83

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SHARING IS CARING

Question 1

Basophils

Monocytes

Eosinophils

Lymphocytes

Solution

Question 2

A-(iii), B-(iv), C-(i), D-(ii)

A-(i), B-(ii), C-(iii), D-(iv)

A-(iii), B-(ii), C-(iv), D-(i)

A-(iii), B-(ii), C-(i), D-(iv)

Solution

Question 3

Muscles in the wall of alimentary canal

Muscles of the heart

Muscles assisting locomotion

Muscles of the eyelids

Solution

Question 4

(l)-Neutrophils, (2)-basophiIs, (4)-fibrinogens, (5)-thrombin

(3)-mast cells, (4)-throm bo kinase, (5)prothrombin

(3)-megakaryocytes, (4) prothrombin, (5)thrombin

(1)-Basophils, (2)-neutrophils, (3)-reticulocytes

Solution

Question 5

D is eosinophil which is found more in asthma patients.

B is lymphocyte which helps in blood clotting.

C is neutrophil which is phagocytic in nature

A is monocyte which releases histamine, serotonin and heparin.

Solution

Question 6

Xylem

Phloem

Sieve tube

Companion cell

Solution

Question 7

Juxtaglomerular cells, macula densa and lacis cells

Juxtaglomerular cells, Purkinje cells and chief cells

Juxtaglomerular cells, lacis cells and myoepithelial cells

Juxtaglomerular cells, macula densa and argentaffin cells

Solution

Question 8

people eat more nutritive food so more RBCs are formed

people get pollution-free air to breathe and more oxygen is available

atmospheric oxygen level is less and hence, more RBCs are needed to absorb the required amount of oxygen to survive

there is more UV radiation which enhances RBC production

Solution

Question 9

External anal sphincter

Internal anal sphincter

Internal urethral sphincter

Both B and C

Solution

Question 10

The red blood cells (RBCs) in an elephant are much bigger than those in a mouse.

There is no correlation between cell size and body size.

The red blood cells (RBCs) of an elephant and mouse will be of the same size

Both B and C

Solution

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