XI - CH - 18 - Circulation - P2

Which of the following use water from

their environment as circulating fluid

• (A) Sponges

• (B) Coelenterates

• (C) a and b

• (D) Fishes

Plasma is a straw coloured, viscous fluid

constituting nearly ____ % of blood

• (A) 55

• (B) 45

• (C) 90

• (D) 10

The amount of water present in blood

plasma is

• (A) 99%

• (B) 90-92%

• (C) 10%

• (D) 55%

Formed elements of blood include

• (A) RBC, WBC and blood platelets

• (B) All solutes present in blood

• (C) Proteins present in blood

• (D) All minerals (elements)

Life span of human RBC is

• (A) 120 hours

• (B) 120 month

• (C) 120 days

• (D) 102 days

What is the amount of

haemoglobin present in 100 ml blood of

human blood?

• (A) 45 g

• (B) 18-20 g

• (C) 12-16 g

• (D) 10 -12 g

Mammalian RBCs are in shape

• (A) Oval

• (B) Biconvex

• (C) biconcave

• (D) Sickle like

All of the following are granulocytes

except

• (A) Neutrophils

• (B) Eosinophils

• (C) Basophils only

• (D) Lymphocytes and monocytes

Megakaryocytes produce

• (A) Leucocytes

• (B) Lymphocytes

• (C) Bone cells

• (D) Blood platelets (thrombocytes)

mm3 blood has how many blood

platelets?

• (A) 150000 - 350000

• (B) 1.5 million to 3.5 million

• (C) 1500-3000

• (D) 10 to 15 lacs