Question

Match the animals listed in column I to blood listed in column II.

	Column I		Column II
a	Man	p	Plasma and cells colourless
b	Earthworm	q	Plasma colourless and nucleated RBC
c	Cockroach	r	Plasma colourless and enucleated RBC
d	Frog	s	Plasma red and nucleated colourless RBC
		t	Plasma and RBC have haemoglobin

• A. a-r, b-s, c-p, d-q
• B. a-s, b-t, c-r, d-q
• C. a-p, b-s, c-q, d-r
• D. a-t, b-r, c-p, d-s

Answer 1

The correct option is A a-r, b-s, c-p, d-q

[A] In man, about 55% of blood is blood plasma, a fluid that is the blood's liquid medium, which by itself is colourless and has enucleated RBC. So, a matches r.

[B] In earthworm, blood is reddish in colour. It is formed of plasma and corpuscles. The corpuscles are amoeboid, colourless and the RBCs are nucleated. The plasma contains a red pigment called haemoglobin. So, b matches s.

[C] Cockroaches have white blood because cockroaches lack haemoglobin in their blood. So, c matches p.

[D] Frog blood is similar to human blood in its basic structure. Like human blood, frog blood is mainly made of the liquid plasma matrix and red blood cells. Plasma is colourless with nucleated RBC and no platelets. So, e matches q.

Thus, the correct answer is A.