Body Fluids and Circulation — Page 2 | NEET Biology

Q11

RBCs do not occur in

A frog

B cow

C camel

D cockroach

Correct Answer

Option D

Solution

(d) Cockroach blood (haemolymph) does not contain RBCs and does not serve for respiration.

Q12

Mineral found in red pigment of vertebrate blood is

A magnesium

B iron

C calcium

D copper

Correct Answer

Option B

Solution

(b) Iron is the mineral found in haemoglobin, the red pigment of vertebrate blood.

Q13

Lymph differs from blood in possessing

A only white blood cells

B more RBC and WBC

C more RBC and few WBC

D more WBC and fewer RBC

Correct Answer

Option A

Solution

(a) Lymph differs from blood in that it contains less protein and no red blood cells.

Q14

Removal of calcium from freshly collected blood would

A cause delayed clotting

B prevent clotting

C cause immediate clotting

D prevent destruction of haemoglobin

Correct Answer

Option B

Solution

(b) Removal of calcium from blood would prevent clotting as calcium ions are essential for the clotting cascade.

Q15

A person with blood group A requires blood. The blood group which can be given is

A A and B

B A and AB

C A and O

D A, B, AB and O

Correct Answer

Option C

Solution

(c) A has antigen A and antibody b. Blood group O has no antigens and is universal donor.

Q16

Which one engulfs pathogens rapidly?

A Acidophils

B Monocytes

C Basophils

D Neutrophils

Correct Answer

Option D

Solution

(d) Neutrophils are the most abundant WBCs and most active type, engulfing bacteria rapidly.

Q17

Blood group AB has

A no antigen

B no antibody

C neither antigen nor antibody

D both antigen and antibody are proteins

Correct Answer

Option B

Solution

(b) Blood group AB has antigen A and B but no antibody.

Q18

Wall of blood capillary is formed of

A haemocytes

B parietal cells

C endothelial cells

D oxyntic cells

Correct Answer

Option C

Solution

(c) The walls of blood capillaries are made of only tunica interna (a single layer of squamous endothelial cells).

Q19

Which one of the following is correct?

A Serum = Blood + Fibrinogen

B Lymph = Plasma + RBC + WBC

C Blood = Plasma + RBC + WBC

D Plasma = Blood - Lymphocytes

Correct Answer

Option C

Solution

(c) Blood is composed of blood cells (RBC, WBC, platelets) suspended in plasma.

Q20

Component of blood responsible for producing antibodies is

A Thrombocytes

B Monocytes

C Erythrocytes

D Lymphocytes

Correct Answer

Option D

Solution

(d) Lymphocytes are responsible for making antibodies.